Flat tire on my way home yesterday. Before fixing it, I pumped it up to see how bad the leadk was; then I found a piece of a staple stuck through the tread. When I pulled that out, I heard air escaping, so I knew just where the problem was. I was able to patch it without taking the wheel off the bike -- just pulled a foot or so of tube out, patched it, and stuck it back together. Less than ten minutes lost, didn't even make my fingers greasy!

Only my third commuting flat of the year, so I think I'm doing pretty well.