From the game Donkey Kong 64 for the Nintendo 64.

Do the Weird room for movie scene glitch. Now, don't enter the room. Swim behind the computers in the blue and black area. Now, jump forwards so you crash into the computers but fall back through the blue and black area. This is hard to do... we've only tried and done it once. If done correctly, you will land invisible on the ground. Walk around a bit, and you'll reappear, walking at an angle. You can take out your gun and if you go to a lower level of land, the heels of your feet will dig into the ground. If you jump, everything will get fixed.

Submitted by: kornyhatemachine