clipped from: strategywiki.org   

Standard controls

Wii Remote & Nunchuk GameCube Controller Classic Controller Wii Remote (held sideways) Action
Left nunchuk, Right nunchuk Left control, Right control Left lstick, Right lstick Left dpad, Right dpad Run
Smash Left nunchuk, Right nunchuk Smash Left control, Right control Smash Left lstick, Right lstick Double-tap Left dpad, Right dpad Dash
Up nunchuk, Up dpad, C button Up control, X button, Y button Up lstick, X button, Y button Up dpad Jump
Down nunchuk Down control Down lstick Down dpad Duck
Smash Down nunchuk Smash Down control Smash Down lstick Tap Down dpad quickly Drop through platforms
A button A button A button 2 button Standard Attack
Neutral nunchuk+A button Neutral control+A button Neutral lstick+A button Neutral dpad+2 button Strong Attack
B button B button B button 1 button Special Attack
Smash Neutral nunchuk+A button, Smash Neutral control+A button, Neutral cstick Smash Neutral lstick+A button, Neutral rstick Neutral dpad+1 button+2 button, Neutral dpad+2 button simultaneously Smash Attack
Down dpad, Z button L button, R button L button, R button B button Shield
Left dpad, Right dpad, Down dpad+A button, Z button+A button, A button+B button Z button, L button+A button, R button+A button Zl button, Zr button, L button+A button, R button+A button Minus button, B button+2 button Grab
1 button, 2 button, 1 button+2 button Neutral dpad Neutral dpad A button Taunt
Plus button Start button Plus button Plus button Pause

[edit] Smash attacks

Standard Attack

Strong Attack

Smash Attack