Super Smash Bros
Mario Kart 64
Super Mario 64
Pokemon Stadium
Pokemon Snap

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.

Armorines: Project S.W.A.R.M...trust me.

 Definitely these. =D

 Oh my god, yes. Closest thing to a good Starship troopers game (even though it isn't) I've ever played.

Try Beetle Adventure Racing, I heard it was a good game.

And buy The Legend of the Mystical Ninja!, Probably the third best game on the console after Ocarina and Perfect Dark.

If you're a Football fan try International Super Star Soccer 2000 or 98.

Shadows of the Empire, Conker's Bad Fur Day, and Hybrid Heaven. Perfect Dark isn't as good as GoldenEye. Sorry. Remote mines are the greatest weapon in any game ever made thank you very much.

You're right, Perfect Dark is a thousand times BETTER than GoldenEye!

Ohh, and I forgot, get Castlevania Legacy of Darkness too.

since u have orcarina, goldeneye and perfect dark, i could only suggest
mario kart, mario64 and starfox

and for those who think that perfect dark is better than goldeneye ur crazy
i'll make a thread

Perfect Dark isn't close to the game GoldenEye is.  It's a clone.  Feel free to have your incorrect opinion that most people wouldn't agree with though.  I mean really, GoldenEye is the greatest shooter of all time.  Most any video game veteran will tell you that.  All multplayer shooters owe everything to GoldenEye.  I will not comment on this again because I am not a thread derailer.  :p