XBOX - I learned my lesson last time around with the PS3 version being so glitchy. As for the PC, I'll probably get that version to check out the modding at some point but I like to play on my nice comfy sofa with the big screen tv. I just can't see playing for any real length of time in my computer chair, and I'm not buying a laptop any time soon.
My husband and I share but he usually lets me have first dibs. Sometimes we watch each other play or we play games on our other devices - him on the iPad and me on my 3DS. We picked up lots of games over the holidays (great Boxing Day specials yesterday - 50% off at EB Games!) so there's certainly no lack of gaming at our house! And of course, there's always this site. My husband's playing right now while I get my Skyrim fix right here!