Just get it on 360 or whatever else, not the Wii. I'll second and third the call for the Konami Rebirth games (Castlevania, Contra, and Gradius) since they're excellent titles just on there to grab. Also if you were into odd pinball, a 3D recreation of the old Devils Crush/Alien Crush TG16 pinball games are on the Wii too, I had one and it's fun. You're best looking for games just on Wii that's not on other hardware you have so you get the best value.

Nintendolife.com has a fantastic database you can sort and sub-sort for WiiWare, VC, etc and it'll put the games A-Z or however you want with the rating right there, you can click in for the full review. Find something that looks good and read up.