I've got two bikes at the moment. My main single speed commuter (my method of transportation around campus and town) and a mid-70's Schwinn Varsity 10 speed that I ride around when I feel like over exerting myself (40 pounds does not a fast bike make) or for fun occasionally.
I had a cheap Diamondback mountain bike from Dick's that I'd had for years, but it got stolen over the summer. Can't really say I miss it too much
Also have a collection of old dead bikes behind my house, I think there's three mountain bikes, a hybrid, and a weird beach cruiser thing. They're useful to have around for parts occasionally, not good for much else...might fix up the cruiser since all it needs is a new back wheel and chain.
I had a low quality no-name frame I was going to make into a fixed, but it got stolen as well. I have bad luck sometimes...Still want to build a fixed from the frame up though, if I come across another frame (got the stolen one for free).