Will and Jaden Smith
(Credit: Getty Images/Pascal le Segretain)Young Jaden Smith has acted in several movies, including some alongside his father.
Tom and Colin Hanks
(Credit: Getty Images/Stephen Lovekin)Colin Hanks has acted in films like "The House Bunny" and "Orange County". His father... well we all know the great movies Tom Hank has done.
Ron and Rance Howard
(Credit: Getty Images/Kevin Winter)Rance Howard, pictured on the left, is a very popular actor. He appeared in several movies including "Apollo 13", "Independence Day", "Psycho" and "Jonah Hex". His son, Ron Howard, also entered the acting business, seeing his own full share of success.
Robert Downey Jr. and Sr.
(Credit: Stephen Lovekin/Getty Images)Actor Robert Downey Jr. and father Robert Downey Sr. arrive at TIME's 100 Most Influential People Gala at Frederick P. Rose Hall on May 08, 2008 in New York City.
Rob and Carl Reiner
(Credit: Getty Images/Kevin Winter)Actor/director Rob Reiner, right, is the son of actor/director Carl Reiner.
Britain's Prince Charles and Prince William
(Credit: JOHN STILLWELL/AFP/Getty Images)Britain's Prince Charles (R) walks with Prince William followed by his wife Kate (2L), the Duchess of Cambridge and the Duchess of Cornwall as they make their way to Buckingham Palace for the evening celebrations following Charles and Kate's wedding earlier in the day on April 29, 2011 in London.
Nicholas Cage, Weston Cage
(Photo by Kevin Winter/Getty Images)Actor Nicolas Cage, wife Alice Kim and son Weston arrive at the Disney Premiere Of "National Treasure" on November 8, 2004 at the Pasadena Civic Auditorium, in Pasadena, California. Weston has acted alongside his father in films like "Lord of War". Weston's passion, however, is his band Eyes of Noctum.
Master P. and Romeo
(Credit: Getty Images/Jesse Grant)Master P., pictured on the right, is a successful rapper. His son, Romeo, also entered the family business of entertainment.
Martin and Charlie Sheen
(Photo by Vince Bucci/Getty Images)Actors Charlie Sheen (L) and Martin Sheen present the award for Outstanding Supporting Actress in a Drama Series onstage at the 58th Annual Primetime Emmy Awards at the Shrine Auditorium on August 27, 2006 in Los Angeles, California.
Kirk and Michael Douglass
(Credit: Getty Images/Bryan Bedder)Kirk Douglass and his son, Michael, both found fame in Hollywood.
(Credit: Getty Images/Michael Locciasano)Actor George Clooney is the son of broadcaster Nick Clooney.
Gary and Jake Busey
(Photo by Giulio Marcocchi/Getty Images)Actors Gary Busey (L) and son Jake Busey arrive at the 13th Annual Night of 100 Stars Oscar Viewing Black Tie Gala, February 29, 2004 at the Beverly Hills Hotel in Beverly Hills, California.
Kiefer and Donald Sutherland
(Credit: GABRIEL BOUYS/AFP/Getty Images)Canadian actor Kiefer Sutherland hugs his father, actor Donald Sutherland, after being honored with the 2,377th Star on the Hollywood Walk of Fame, December 9, 2008 in Hollywood, California. Sutherland stars as Jack Bauer in the show "24."
(Credit: Mike Coppola/Getty Images)Donald Trump is seen here with his son, Eric.
(Credit: Getty Images/Christain Petersen)Sometimes, politics can be a family business too. Former President George W. Bush, right, is seen here with his father, former President George H.W. Bush.
Ben and Jerry Stiller
(Credit: Getty Images/Kevin Winter)Actor Ben Stiller is seen here with his father Jerry Stiller, a comedian.