During a performance in Amsterdam the other night, Metallica's James Hetfield fell into an open trap door on the stage. But not willing to let that stop him, Hetfield, after a few seconds, got up and kept on rocking.
The door had just opened a few seconds earlier to bring up some gear for the show, so it's not like it was there the whole time and he didn't notice it. And according to the YouTube description of the video, this was only the band's second show with their new stage, so Hetfield probably wasn't familiar with all the cues for every song.
Regardless, it's pretty cool that Hetfield didn't let this slow him down! Keep rockin'!