Not so much anymore (actually, since Alex and Charlotte came around), but I used to be really into video games. I still love to play, often organising game nights at my house (I mean, like LAN nights, or organising a few people to come and play couch co-op). My favourite games of all time are anything made by Cliffy B (Gears of War), Naughty Dog (Uncharted) and the Monster Hunter Series.
The game I invested the most time in was DC Universe Online. Not only did I play a lot of that, I also ran a successful webpage dedicated to helping people to play (thedcuobook). We were generating 100,000 unique visitors per month to the page, had a 12 episode arc podcast that was getting 30,000 people downloading it, and 20,000 people watching each episode of our Day in the Life of a DCUO player web series.
Unfortunately, time got in the way of the hobby and I had to let the webpage and the gaming go. But I still have fond memories of waking up at 5am to participate in 8 man raids with a kooky bunch of people from the UK.