The creator of this 2004 video has turned on "God mode" so that the rocket blasts don't hurt, and then showed what a rocket-jumper with serious mad skillz can do when unleashed on the more imaginative Quake III maps.
There's something almost laugh-out-loud funny about the combination of Matrix-style editing and novel, precise rocket-jump moves. Even if you're not a Quake player (I'm not, particularly, though I live with a retired member of the UK national Quake team) this is every bit as engrossing as any parkour video or Olympic demonstration sport.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.