Pocket Bike Racers - The advert-game from Burger King is actually one of my favorite Xbox or Xbox360 games of all time; mainly because it is one glitched piece of crap. There are intentional and unintentional shortcuts through the entire game.
One very funny glitch - On the second track, the Backyard Track, it is possible to end the race in 8th place with the lowest time.
The idea is that you are in 8th place, and you perform a jump large enough to cross the finish line while still airborne. The game only calculates place while you are on the ground, but calculates the race finished by crossing. Thus, you end the race, in last place, while finishing the race first. (In a better execution, you'd see that its possible to be the only one listed.)
If we ever get Xbox TASing, I am going to TAS this game, for the many, many glitches that are exploitable.