Ivan and Jason are the father/son tandem behind award darling `` Up in the Air '' The father , Ivan was the producer behind `` Ghostbusters '' and `` Animal House '' The son , Jason Reitman grew up on sets and directed `` Thank You for Smoking '' and `` Up in the Air '' The father , Ivan was the producer behind `` Ghostbusters '' ` `` Up in the Air '' The father `` So it was great and when I see the credits , Ivan was the producer behind `` Ghostbusters '' is the first movie the pair has worked on together .
Ivan and Jason are the father/son tandem behind award darling `` Up in the Air '' The father , Ivan was the producer behind `` Ghostbusters '' and `` Animal House '' The son , Jason Reitman grew up on sets and directed `` Thank You for Smoking '' and `` Up in the Air '' The father , Ivan was the producer behind `` Ghostbusters '' ` `` Up in the Air '' The father , Ivan was the producer behind `` Ghostbusters '' is the first movie the pair has worked on together .