"Keep the cameras rolling!"  You never know what you are gonna see happening in the background of a picture or video.  Although unintended, this video caught some pretty amazing footage. 

An afternoon of skateboarding netted a surprising video.  Here is the description.

"During the filming of Jaasir Linger in Amsterdam, all of a sudden a crane drops a massive concrete slab on top of a parked line bus and totaled it! ppl were luckily not in the way, or else things would have been serious."