I'm putting some finishing touches on having my gaming PC (in a bedroom upstairs) available for gaming on my TV all the way in the basement.
HDMI Extender +
USB Extender + Cat 6
Now I just need a couch!
My genre of choice is first person shooters, and after doing a bit of XBOX gaming, I can handle myself decently with a controller. However, I wouldn't try it in a multiplayer game. Single player isn't so bad. It's too bad that not all games support controllers, though.