Last year, we had a forklift robot, with pointy ends.
When doing auton testing with our practice robot, if we forgot to reset the robot in between tests, the robot would arc 180 degrees, and smash into the wall right in front of our programmer.
Well, we remembered for a while to reset the robot, but after we started to move the forks in auto mode, and they would fall down, we forgot a couple times. Twice, our lead programmer was smacked in the face with the forks. So we moved his table back a few feet

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I'm sure Pat will chime in here saying "When was this?"