Actor Alan Thicke (L) and his son, singer Robin Thicke, arrive at the opening of Jay-Z's USD 20 million 40/40 Club at The Palazzo Resort-Hotel-Casino December 30, 2007 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
Jerry Stiller, Ben Stiller
Ben Stiller and Jerry Stiller attend the HELP HAITI benefiting The Ben Stiller Foundation and The J/P Haitian Relief Organization at the Urban Zen Center At Stephan Weiss Studio on February 11, 2011 in New York City. (Photo by Michael Loccisano/Getty Images)
James Brolin, Josh Brolin
Actor James Brolin, wife singer Barbra Streisand and actor Josh Brolin arrive at premiere of Warner Bros. "Jonah Hex" held at ArcLight Cinema's Cinerama Dome on June 17, 2010 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
Kiefer Sutherland, Donald Sutherland
Canadian actor Kiefer Sutherland (R) poses with his father, actor Donald Sutherland (L), after being honored with the 2,377th Star on the Hollywood Walk of Fame, December 9, 2008 in Hollywood, California. AFP PHOTO / GABRIEL BOUYS
Kirk Douglas, Michael Douglas
Actors Kirk Douglas and Michael Douglas in the audience during the AFI Lifetime Achievement Award: A Tribute to Michael Douglas held at Sony Pictures Studios on June 11, 2009 in Culver City, California. (Photo by Frazer Harrison/Getty Images for AFI)
Ozzie Nelson, Ricky Nelson
Before there was Ozzy and Jack , there was Ozzie and Ricky. Ozzie and his wife gave us one of America’s most endearing sitcoms and institutions, The Adventures of Ozzie and Harriet. The show could be seen on our television sets from 1952 to 1966. During the show’s run and after, son Ricky was busy making hit records. In fact, over 53 of his songs made the Top 100 Billboard charts from 1957 and 1973. (credit: AP)
Rob Reiner, Carl Reiner
Actors/directors Carl Reiner (L) and his son Rob Reiner arrive at AARP Magazine's "10th Annual Movies For Grownups" Awards Gala at the Beverly Wilshire Hotel on February 7, 2011 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)
Beau Bridges, Lloyd Bridges, Jeff Bridges
A triple threat! Whether it’s Airplane!, Sea Hunt, The Fabulous Baker Boys or The Big Lebowski. This trio one way or another has been a shining star since Dad appeared in his first film in 1936! Now, 75 years later, it may be safe to say that nobody is a hotter commodity right now than Jeff. (credit: AP)
Will Smith, Jaden Smith
Actor Will Smith (L) poses with Jaden Smith (R) as they attend "The Karate Kid" film premiere at Le Grand Rex on July 25, 2010 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)
