I already have a PS3 and an xbox 360. I only have two game systems by nintendo (N64 and DS) and I love playing Mario && Zelda games, so I was thinking of buying a Wii, but the controls seem to be difficult.
I've never played Wii before, so I don't really know if it actually is really difficult to use the controls (how you have to stand and tilt the controller, since I suck at tilting games). So I'm just wondering, is it easy to get the hang of the Wii? I was thinking that if i were to buy it, i would get Super Smash Bros. Brawl and Twilight Princess for a month or two.

Super Smash Brothers Brawl doesn't involve shaking/tilting. Unless you turn on Shake Smash. Also you can use a GameCube controller for it. (They dont sell Game Cube games anymore so you need to buy a wireless Game Cube controller.) I personally thing Game Cube controller is the best option. And I dunno about Twlight Princess yet.