So WiiSport/Play like experiences:
I'd still recommend Super Mario Galaxy, because it's, just like the games you mentioned, a lot of FUN.
If you'd like to try lightgun shooter: Resident Evil: UC or Ghost Squad, very easy to learn, lots of fun as well.
Party-games: Rayman Raving Rabbids 1 or 2 (1 is probably cheaper), WarioWare and Mario & Sonic at the Olympics.
If you want to try heavier stuff: Zelda Twilight Princess and RE4Wii are amazing.
If you like oldschool Mario with a twist: Super Paper Mario
Future must have: Mario Kart
Good luck!
EDIT: Shame on me, forgot to mention Zack & Wiki, gameplay is very easy and intuitive, puzzles can be insanely hard.







