Favorites:
Ocarina
Mario 64
Mario Galaxy
Donkey Kong Country 2
Super Smash Bros. (all)
Most important:
Super Mario Bros.
Wii Sports
Pokemon RGB
Donkey Kong Arcade
Brain Training
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.