Short of an updated Back to the Future game (time is running out - pun intended)...
Beetlejuice
Jaws
Seinfeld
Sean Connery Bond Films
Caddyshack
Predator (as in the prototype machine - just mass produced so that I can get one)
I realize that most of those will probably never happen, but Beetlejuice could make a killer playfield theme as could Jaws.