Crazy thought but wouldn't playing 20 hours straight for a week be... boring? Just the thought of promising people that you would play that long is painful enough. It's like being forced to play.
"OMG R U STPD? ITS DA WII"
Not only would my eyes bleed but my brain would blow up from playing my favorite games for a few hours straight. Maybe its because I haven't experienced World of Warcraft yet.