Heya - I've been a recent convert back to biking (in general, and in a few different disciplines). I'm commuting to work by bike almost exclusively these days, and it feels very, very good. My employer is very cool with it, and I'm lucky to have some nice bike trails along the route. It's about 15.5 miles each way (conveniently downhill on the way to to work, and uphill back....). I resurrected my old Trek 830 as the official commuter for a bit, and I'm thinking a roadie for short jaunts with no equipment may be in the future if I can budget it in. No panniers yet, but that may come depending on needs. Right now, the Timbuk2 bag is sufficient for what I have to carry... sometimes a bit more sweaty than I'd like though.
Here's a pic: