The agent Roger Thornhill
was mistaken for in Hitchcock
's classic "North By Northwest
", starring Cary Grant
and Eva Marie Saint
. George Kaplan was a ficticious person - second cousin to Harvey the Rabbit
- that the government invented so that their real agent wasn't discovered. Cool movie.
Also the name of the leader of the Candy Bars (played by James Coburn) in the Bruce Willis classic "Hudson Hawk".