Since I've given up riding the dirt trail (for now) and am resigned to riding on pavement, I dusted off the ol' fixed gear this morning (figuratively - I was in a bit of a rush, so I didn't take the time to literally dust it off, though I did literally inflate the tires). Haven't ridden it since last fall, but there was only once during the commute where I had to be rudely reminded that I was on a fixed gear (if you've ever ridden a fixie, you'll know what I'm talking about).
About a block from home, I realized I forgot to transfer my under-seat roadside repair kit from my other bike, so I quickly turned back and retrieved it.
I did find myself struggling a bit up the hills. Riding my geared bike has made me soft, it seems.