I'm in Bozeman, MT right now and took a ride through downtown... was rising out of a driveway and ended up going off a curb to make a turn and when my front wheel hit the pavement, the screw holding the handlebars in position snapped in two... leading the handlebars still attached but flopping freely back and forth! Not very rideable.
Fortunately, I was but 3 blocks away from a nice LBS and -- given that I was riding my Trek Navigator -- I was thankful that they were a Trek dealer and had the replacement parts right there. Back on the road in 5 minutes. I'm just glad I didn't go over the handlebars.