I live in central Vermont and have never seen another fixie on the road up here, though I've heard rumors of a guy who rides to Montpelier, 60 miles away, for lunch. When people do notice, they don't get it. They can't conceive of a bike with only one gear and no freewheel. My commute is 25-50 miles, depending on whether or not I drive part way. It's along a river valley, so the hills aren't as bad as they might be. My favourite part is riding through the local "Miracle Mile," where I regularly beat cars from one end of the strip to the other.
Some teenagers sprayed me with a Supersquirter last summer, then didn't notice me catch up to them at the light until I hosed the shooter with my water bottle.