Buy OKAMI!!!
Also, Zelda Twilight Princess, hope you find it somewhere..
De Blob (really fun and polished platformer)
NPC Pikmin 1 & 2, NPC Donkey Kong Jungle Beat
Mario Galaxy 2, when that releases over there
And definitely, definitely get ENDLESS OCEAN 2
House OTD Overkill is also recommended, but only if you can find it for cheap. It's a great game, but not worth full price imo.
Wario Ware Smooth Moves. This game's hilarious! Makes excellent use of the Wiimote, too, better than 95% of other Wii games.
No More Heroes & NMH 2. Fun, fun and brutally satisfying. Great sense of humour, too. 
Also, buy Okami!!
Little King's Story might be good for some, but personally I don't recommend this. At all. It can be fun, at times, but it's flawed on so many points it breaks the experience. To me.
Get Okami!
Nintendo Network ID: Cheebee 3DS Code: 2320 - 6113 - 9046
