3 times

1. Climbing at about 5mph. Bumped the curb and went to zero and couldn't accelerate back up. Plop.

2. Climbing at about 5mph. Hit a gravel patch. Tried to get out of it but couldn't move. Ouch.

3. Riding home fried after a hard group ride. Unclipped on one side, but tipped to the wrong side and too wrecked to do anything about it.

I had a nasty bruise on my thigh after 1 & after 2

1&2 SPD I think, or Speedplay Zeros
3. Speedplay light action