DNF - Slot Machine Clipping Glitch
"Found a neat little glitch while gambling a bit in Duke Nukem Forever. After you hit Use again after playing and move sharply so you look behind you, you can actually clip into the slot machine and the game tries to fix this by setting you on the highest point possible above the machine. Kinda like the original clipping glitch in Duke Nukem 3D, but I never figured out how to do it."