Zelda Wii
Wii Play Plus with online as said above
Wii Relax (I think this one will be marketed alongside Wii Fit as being part of the whole health thingy)
SMG2 - no chance, it will stall at 6~7M
The Last Story - the game that is rumored to use the vitality sensor, if it is a nice hit and unique software
Nothing else in my opinion there's no kirby, starfox, metroid, etc that can go that higher in sales.