12. Jason Reitman
The director of Juno and Up in the Air is the progeny of Ghostbusters filmmaker Ivan Reitman. Ivan is known for making comedies with mass appeal while Jason has focused on smaller projects that have garnered much acclaim. Clearly, Ivan influenced his sons career choice but the differences between the two directors interests are quite telling.
11. Daniel Radcliffe
The Harry Potter star has showbiz blood running through his veins. His mother, Marcia Jeannine Gresham, is a casting agent. Meanwhile his father, Alan George Radcliffe, is a literary agent. Just to clarify, agents are the representatives of the talent who often find work for actors et al and negotiate their compensation and support their interests, etc. Therefore, there may be no better parent in Hollywood than agents. Radcliffe is just starting life post-Potter and will surely look to grow and develop as an actor. He has already done some stage work and even did a little performance during the Oscars.