World of Warcraft does a decent job at wasting your life. It gives you goals every step of the way, and consumes lots of time. It's a VERY dumbed down MMORPG to appeal to the masses. But, if you really want to find something you'll like, then check out mmorpg.com and just do some research. Plenty of forums there, with plenty of information from both biases and unbiased and anti-biased people. You'll more than likely find a game to check out. Personally, I'm playing WoW while waiting for Warhammer, which is going to kick epic amounts of ass.
Ummm. Enemy Territory? You've got Wolfenstein Enemy Territory and Enemy Territory Quake Wars. Quake Wars has good graphics and a more developed system, but Wolfenstein is free. Either will eat your life.
Fly/Jump off a roof nothing wrong with 360 better then both those systems I wouldn't suggest wow wait till hellgate comes out
WIN. also consider weight lifting and cross country running. Right now I lift 10 months a year and do XC on my own during the summer and winter when school is closed.