How can you ask someone that. Theres alot of good wii titles. We have NO clue what so ever as to what games your into. Ok the last game you bought was the godfather. Fine, get Zelda: Twilight Princess, great game..
You liked godfather...so maybe you would like Call of Duty 3 or Splinter Cell: Double Agent. Personally, Ultimate Alliance has been my favorite game (story mode, which has a 4 player co-op feature, and great replay value). DBZ:Tenkaichi 2 wears down on you, Call of Duty is short, Elebits is....a different category, etc.
Read up on Ultimate Alliance, or, if you'd like, I could send you a personal review over a PM.