Ryan Dunn of "Jackass," 1977-2011

Bam Margera, left, and friends attend the memorial service for Ryan Dunn, June 22, 2011, in West Chester, Pa.

Ryan Dunn from "Jackass" killed in car accident

Johnny Knoxville, left, attends the memorial service for Ryan Dunn, June 22, 2011, in West Chester, Pa.

Ryan Dunn from "Jackass" killed in car accident

"It's Always Sunny in Philadelphia" stars Glenn Howerton, left, and Rob McElhenney attend a memorial service for Ryan Dunn, June 22, 2011, in West Chester, Pa.

Ryan Dunn from "Jackass" killed in car accident

April and Phil Margera arrive at a memorial service for Ryan Dunn, June 22, 2011 in West Chester, Pa.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn attends the Blu-ray and DVD release of Paramount Home Entertainment's "Jackass 3" at the Paramount Studios on March 7, 2011, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn, left, tweeted this photo in the early morning, Monday, June 20, 2011. Dunn was killed in a car accident outside Philadelphia around 3:00 a.m.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn, left, and producer Trip Taylor attend the Blu-Ray and DVD release party for Paramount Home Entertainment's "Jackass 3" at Paramount Studios on March 7, 2011, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn attends the Blu-ray and DVD release of Paramount Home Entertainment's "Jackass 3" at the Paramount Studios on March 7, 2011, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn, left, and Jason "Wee Man" Acuna attend the "Jackass 3D" afterparty at Jet Black on Nov. 2, 2010, in London.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn arrives at the premiere of Paramount Pictures and MTV Films' "Jackass 3D" at the Mann's Chinese Theater on Oct. 13, 2010, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident

From left to right, Dave England, Preston Lacy, Ehren McGhehe, Ryan Dunn, Wee Man, Bam Marjera, Johnny Knoxville and Steve-O of "Jackass" pose in the press room during the MTV Video Music Awards at NOKIA Theatre L.A. LIVE on Sept. 12, 2010, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident

Johnny Knoxville, left, and Ryan Dunn of "Jackass" reenact scenes from "The Social Network" on Jan. 4, 2010, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn arrives at the premiere of Paramount's "Jackass Number Two" at the Chinese Theater on Sept. 21, 2006, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident

Bam Margera, left, and Ryan Dunn appear onstage during a taping of MTV2's "All That Rocks" at CBGB on July 6, 2006, in New York.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn makes an appearance on MTV's Total Request Live at the MTV Times Square Studio Oct. 31, 2005, in New York.

Ryan Dunn from "Jackass" killed in car accident

Bam Margera, left, and Ryan Dunn from MTV'?s "Jackass" and "Viva La Bam" are pictured in the crowd as the band "HIM" plays the Olympia Theatre, Oct. 11, 2004, in Dublin, Ireland.

Ryan Dunn from "Jackass" killed in car accident

Ryan Dunn appears on stage to promote his new show "Viva La Bam" during MTV's Total Request Live at the MTV Times Square Studios April 23, 2004, in New York.

Ryan Dunn from "Jackass" killed in car accident

Director Steven Green, Racer Ryan Dunn and producer Maximillion Cooper pose at the premiere of "Gumball 3000 - The Movie" on Feb. 19, 2004, at the Chinese Theatre, in Los Angeles.

Ryan Dunn from "Jackass" killed in car accident