Scenes from the Conrad Murray trial

Conrad Murray wipes a tear during the defense opening arguments in his involuntary manslaughter trial at Superior Court, Tuesday, Sept. 27, 2011 in Los Angeles. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Michael Jackson's brother and sister, Randy and Janet Jackson, arrive as the involuntary manslaughter trial for Dr. Conrad Murray, Jackson's personal physician when the pop star died, gets underway at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's parents Katherine and Joe Jackson, right, arrive as the involuntary manslaughter trial for Dr. Conrad Murray, Jackson's personal physician when the pop star died, gets underway at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's brother Tito Jackson arrives as the involuntary manslaughter trial for Dr. Conrad Murray, Jackson's personal physician when the pop star died, gets underway at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's parents Katherine and Joe Jackson arrive as the involuntary manslaughter trial for Dr. Conrad Murray, Jackson's personal physician when the pop star died, gets underway at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Randy Jackson and Janet Jackson arrive as the involuntary manslaughter trial for Dr. Conrad Murray, Michael Jackson's personal physician when the pop star died, gets underway at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011.

Holding a sunflower given her by a fan, Michael Jackson's sister Latoya Jackson arrives as the involuntary manslaughter trial for Dr. Conrad Murray, Jackson's personal physician when the pop star died, gets underway at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's father Joe Jackson arrives to court for the trial of Conrad Murray, Michael Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's sister Janet Jackson arrives to court for the trial of Conrad Murray, Michael Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson fan April Smith, left, of Sun Valley, Calif. stands outside court for the trial of Conrad Murray, Michael Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's brother Tito Jackson, center, arrives to court for the trial of Conrad Murray, Michael Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's parents Katherine Jackson, left, and Joe Jackson arrive to court for the trial of Conrad Murray, Michael Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson fan Bristre Clayton of Las Vegas stands outside court during the trial of Conrad Murray, Michael Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's mother Katherine, followed by his sister Latoya, left, leave court at the close of the first day of the involuntary manslaughter trial for Dr. Conrad Murray, Jackson's personal physician when the pop star died in 2009, at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011.

Michael Jackson's brother Jermaine Jackson arrives to court for the trial of Conrad Murray, Michael Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Goward Horton of Los Angeles sings a Michael Jackson song outside court during the trial of Conrad Murray, Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

A Michael Jackson fan waits outside court at the trial of Conrad Murray, Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Michael Jackson's sister and brother, Janet and Randy Jackson, leave at the close of the first day of the involuntary manslaughter trial for Dr. Conrad Murray, Jackson's personal physician when the pop star died in 2009, at the Criminal Justice Center in Los Angeles Tuesday, Sept. 27, 2011.

Pauline Hayes of Los Angeles holds a photo of Michael Jackson as she waits outside court at the trial of Conrad Murray, Jackson's doctor who has been charged with involuntary manslaughter in the pop icon's death, in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter.

Deputy Dist. Atty. David Walgren gives his opening argument in the involuntary manslaughter trial of Conrad Murray at Superior Court in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Conrad Murray looks up during the defense opening arguments in his involuntary manslaughter trial at Superior Court, Tuesday, Sept. 27, 2011 in Los Angeles. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Judge Michael E. Pastor gestures to Defense Attorney Edward Chernoff during opening arguments at the Conrad Murray involuntary manslaughter trial at Superior Court, Tuesday, Sept. 27, 2011 in Los Angeles. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Defense Attorney Edward Chernoff gives his opening argument in the involuntary manslaughter trial of Conrad Murray at Superior Court, Tuesday, Sept. 27, 2011 in Los Angeles. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Choreographer Kenny Ortega testifies for the prosecution in the involuntary manslaughter trial of Conrad Murray at Superior Court in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Defense Attorney Edward Chernoff gives his opening argument in the involuntary manslaughter trial of Conrad Murray at Superior Court in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

A slide of the bed where Michael Jackson died is shown during the prosecution's opening arguments in the Conrad Murray involuntary manslaughter trial at Superior Court, Tuesday, Sept. 27, 2011 in Los Angeles. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

A slide of a bathroom in Michael Jackson's home is shown during the prosecution's opening arguments in the involuntary manslaughter trial of Conrad Murray in downtown Los Angeles Superior Court, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Paul Gongaware, Co-CEO of AEG Live and Concerts West, gestures while on the stand for the prosecution in the involuntary manslaughter trial of Conrad Murray at Superior Court in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Conrad Murray, left, looks to his defense attorney Edward Chernoff during his involuntary manslaughter trial at Superior Court in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

Deputy District Attorney Deborah Brazil questions Paul Gongaware, Co-CEO of AEG Live and Concerts West, in the involuntary manslaughter trial of Conrad Murray at Superior Court in Los Angeles, Tuesday, Sept. 27, 2011. Murray has pleaded not guilty and faces four years in prison and the loss of his medical license if convicted of involuntary manslaughter in Michael Jackson's death.

More: Who's who in the trial of Dr. Conrad Murray