1. Not yet.
2. No, but a future Wii will. ( There is rumor that there will be a firmware update for those who bought their earlier though.)
3. Well, there's Red Steel, COD3, Far Cry... Others I think. But you might wanna hold your money for a FPS that people will completely love. There's no online for any right now.
4. Not at all.
5. Zelda: Twilight Princess. End.
Though using the search function, you could easily find asnwers to many of your questions.
Edit: No problem. But I'ma close this topic. I don't mean it offensively, but I just want to keep this thread clean as possible, because if I don't, people are going to insult you, and stuff like that.