I'm getting the Wii, could you name 7 core games and 3 casuals ?

[L.C.E.C.]

HardCore:

1. Super Smash Bros. Brawl
2. No More Heroes
3. The Legend Of Zelda: Twilight Princess
4. Super Mario Galaxy
5. Re4 Wii Edition
6. Sonic And The Secret Rings
7. Metroid Prime 3/Okami

Replace Metroid Prime 3 with Okami if you haven't played any of the MP games and don't want to spoil them, or replace RE4 with it if you've played it too many times. Zack & Wiki is good also, so it could make a good replacement for any of the above.

Casual:

1. Mario Kart Wii
2. Rayman Raving Rabbids 1 or 2 (many prefer the first over the second, it's your choice)
3. Mario & Sonic at the Olympic games/ Guitar Hero III