if so, you really need to check this video out
Crazy Rocketjump Movie
not only are the stunts insane, but it's one of the most professionally made fan videos i've ever seen. it's entertaining in it's own right, but you really need to have played the game in order to appreciate how difficult everything is that they're doing. made me realize how much i miss playing Q3, and how ****ed i am that Quake 4 flopped so hard