Really all 3 (Even the made up Pokemon Snap) really interest me.
A true sequel to Donkey Kong 64 would make me really happy. I know Rare did own a few of the characters in that 64 version, but I could conceivably see Nintendo either making new ones or asking Rare for permission to use some. (Especially Lanky. Lanky's the man.)
I've never played Kid Icarus, (The original) but I know that is loved by almost all who play it. So, I can imagine myself picking it up if there were some solid reviews.
And even Pokemon Snap 2, which I would love, handled the right way could be amazing. Picture all 500 Pokemon in one game. Take it off rails. Have it cover all the regions in Pokemon, be able to take online and co-op with friends, be able to battle with friends (Who can get the most pictures of Different Pokemon in XXX amount of time) Have an option to send it pictures to friends and Nintendo for a pic of the day competition. And that's just the start.