The game that made me smile the most in a very long time is Dracula Cha Cha. At a speed I can appreciate, five or six years later this game has four extra levels and a proper ending.
Inspired by more than just Konami's Tomena Sammer, this is a wonderful thing for PCs. Yes that's a green faced Dracula (briefly) riding a moped with Rudolph the Red Nosed reindeer on the streets of Venice.
The SPACE bar is all you need to play. Many thank to Lobo of Infectuous for (nearly) completing one of my all time favourite one-switch games.