20s
H.P. Lovecraft

30s
King Kong

40s
The Road Runner and Wile E. Coyote

50s
War of the Worlds

60s
Scooby Doo

70s
Monty Python and the Holy Grail

80s
Video Games: Castlevania, Mega Man, Metroid, and The Legend of Zelda

90s
The Matrix

00s
Harry Potter

10s
Red Dead Redemption

Hmm...I'm surprised that I haven't heard anyone else mention Duck Tales before. Seem like a great theme. Overall, I think the main goal would be to complete shots to fill Uncle Scrooge's money bin. Once it's full, perhaps have a bonus mode where as you make repeated loops or ramps the display shows Scrooge diving into and swimming though his money. The modes could be based on various episodes, where Launchpad McQuack is flying you around the world in search for a treasure. I might use locations like: The Amazon, Bermuda Triangle, Egypt, Himalayas, Transylvania, and Outer Space. Along the way you are of course battling villains. It would also make sense to have the ball lock and corresponding multiball represent Huey, Dewey, and Louie. They are very defined by their shirt colors, so that works well with color changing LEDs. I think it would be a fun game to develop.