I commuted today on my 1960s Falcon San Remo. It's set up as a single speed w/ 27" wheels, fenders, a Brooks B17 saddle, flat alloy bars. I hauled my gear (laptop, food, some papers, lock) in a big Karrimor saddle bag. It's supposed to rain all day, so I wore my rain gear and looked appropriately Phred-ish. The bike is parked in my very small office right now as I didn't feel like looking for a space in one of the sheltered bike stands on campus.
Neal