Swim through walls

From Glitches

From the game Donkey Kong 64 for the Nintendo 64.

First, go underwater, and face a wall while touching it underwater. Go into the first-person camera, and zoom back out, but as soon as you do this, hold down the A button. Hopefully, the Kong will swim through the wall! You can try using this to get to weird places.

Submitted by: Clark Beyer