Hey All You Non-Wii Owners What game would make you buy the Wii in a second

[Ail]

Nothing really, it woudn't be a game but actually several games, I never bought a console for a single game. ( they would pretty much need to stop releasing HD console games for me to consider moving).
I'm happy with my current console and already don't have the time to play every game I want so in the end no game would make me move, more games available woudn't mean I get more time to play them...