It's fun to see hardware fall off someone's board but they keep moving regardless. I like to see a broken board roll-away as well, it's natural. I get the feeling certain pros wouldn't want that sort of footage included, like Felipe Gustavo for example.
Powerslides after landing a trick can be a nice visual treat. Best example I can think of is BA in Yeah Right after the smith grind, where he powerslides into the fence, board goes through the fence, he gets up and walks off all cool. That's almost better than the trick.
Unexpected slappies are nice - Aaron Loreth in 30 Away is a good example.