Super Smash Bros. Glitches

Mushroom kingdom glitch
If you are playing against a cp in the mushroom kingdom, there is a brick platform on the left. If you get the cp close to you on the ground below the platform near where the platform ends, and then quickly jump onto it and go to the left, the cp will get confused and jump up and go from side to side on its way down. It will stay like this as long as you are on the platform.

This is nifty if you are playing with a friend because he/she can kill the enemy while it is in the glitch.