* D&D, always.
* Vampire: Masquerade - we have a weird one currently, vampires and a Mage. It's an unsteady alliance at best...
* Marvel d20 currently on break, it's a very short 1-2 hour game per week that's quite fun and not serious at all. (We fought Oprah in our last battle... :P )
* Ravenloft.
* Considering a Star Wars game.
Not all of these are weekly games... some are every other week, and the Marvel game is pretty much whenever we're bored.
The vampire game is serious and once a week, usually 8 hours long. It's quite fun.