I think Wii Party will be epic. Another 10-20m seller. It is a system seller and aside from GT5 probably the only true system seller coming out this year. Not because it's a mini-game fest, but because Nintendo understands fun and this will be a really fun game for everyone, kids, grandparents and gamers alike.
Kirby, Metroid, DKCR will all sell solidly, like previous versions in their respective series. IE: MoM 1-2m, K:EY - 2-5m, DKCR 3-6m
Pokepark will sell mostly to children but should be good for 1-2m
FlingSmash? Unless it's promoted heavily, will fly under everyone's radar and would be lucky to hit 500k