I'd leave Snap to VC, since you can send your pics to other Wii owners.
Mario Tennis is great fun, especially with a couple of friends.
When it comes to Rare platformers, I'd go with Banjo, then Tooie, then Donkey Kong 64.
Kirby 64 was my introduction to the pink puffball, and I had many a great time.
While Smash Bros. is the first in the series, it's still unique from the sequels and really enjoyable with 3 other players.
So... uh... yeah. 








