Yes
No
no
If you have a Wii controller, of course it can.
Yes
It depends on which remote you are refering to. The Wii Motion Plus controller and the classic Wii Remote will work on the Wii and Wii U. The Wii U gamepad will not work on the original Wii.
Yes, the GameCube controller will work for the Nintendo Wii. Since the Wii can play GameCube games, it requires the use of the GameCube controller and Wii controllers will not work for GameCube games.Also, some Wii games such as Mario Kart Wii and Super Smash Bros Brawl also are compatible with GameCube controllers.
Definitely not, only the gamecube controller.
yes doesnt matter where a controller is from it will work
No, you cannot connect a Wii U controller to a Wii. Only Wii Remotes and other Wii accessories will work for the Wii, and the Wii U GamePad only works for the Wii U.
Yes.
NO
Yes, I think the wii classic controller can work with most of the games. You can have a look at the wii controllers online: http://www.dinodirect.com/Wii-Accessories/Wii-Controllers-1011/