Gorillaz Final Drive
In Gorillaz Final Drive, you drive around trying to do jumps on the half-pipe until you get bored. Given when the video came out, this must be a few years old now - though on the plus side, that probably means that most people's PCs are just getting fast enough to be able to play it.
Controls: Arrow keys to accelerate, brake, steer left and right, Space for handbrake, R to reset car after crash. Tips: The handbrake isn't there for hill starts, it's for pulling spectacular handbrake turns and "180s".