Alrighty, well I've decided to buy my younger sister a few games for the holidays. I was wondering what games you would recommend?

Today I showed her Katamari and she seemed interested, its now at the top of my list.
I will also like to toss a good 2-player racing game in there. she likes the genere, plus It would give us time to play together.
so far, this is what I have in mind...

Katamari
SSX tricky
klanoa

all the recommended game lists I've found seemed to be geared toward a older crowd. Games like resident evil 4, metal gear solid, GTA, they just wouldn't suit her.

Oh, I'm 21, and pretty much living in the past. I stick with my classic mame machine, occasional nes, and a commodore.