There was an arcadey car shooter type game called vigilante 8, a bit like twisted metal or interstate. It's the weirdest bug I've personally found in a game. If you get the homing missiles upgrade there was one combo move that used them as rocket boosters on your car. Now if you hump repetedly against a wall for a while you can get your car to stand on end pointing straight up into the air. Using the rocket boost combo from this position repetedly you can launch your vehicle so high up that the ground is outside the far z-clip plane and you see only sky; sometimes the game will hang.
Twisted metal 2 also had a bit of a funny bug. On the hong kong level you could use the turbo and the jump combo to jump out into the water from a ramp. If you get far enough out you can get outside the "trigger" for splashing into the water and dying and drive around on the water. If you ride straight into the horizon for a few minutes the game will hang.