I watch PK Videos all the time when I am skilling on Runescape and I have come across some really great ones in my time.
There was this one video that had this team of 5 clawers and they would spec whoever their target was to hell. Sadly, I haven't been able to find that video. :\

Anyways, here are a few that I have come across and I hope you enjoy them as much as I enjoy them.