Probably average around 5 hrs/week. I don't get much time because I've got a lot of uni work, so I end up jumping into random online fps' like the insurgency mod for hl2. I've got an ongoing save on Mass Effect which I'd really like to finish but again time is against me
Anywhere from 3-15 hours a week depending on several factors. I'm the type to play a few games for a long time rather than tons of games for short periods of time. My top game now is still Bad Company 2 and waiting on GT5 (damn delays).
the main factor is the game i play. like when i play civilization, most of the time i finish the game in one sitting (like 6-7 hours per game). and i do that like once a week. playing fps games are different entirely since i only take like 2-3 hours tops. before i play like 10 hours a week, but now, because of school and work, i only play like 5 hours per week.
Before I lost my job at Universal I played 3 hrs a day. When I lost my job I became a full time citizen of Northtrend and played 9-10 hrs a day. I was my get away from real life. I quit cold turkey in June and went back to work. I am down to a few hrs a week now depending on my work schedule.