http://www.youtube.com/v/wLPob7yUKO0&rel=1
I had a Mantis Shrimp that was a HH from TBS, he was pretty cool! I wish I could go back in time and get him back, I was afraid he would break my tank, he was almost 2 inches, and someone said its like taking a .22 to the glass if I keep him. I gave him to the LFS in trade for something else...
I may set up a mantis tank soon and get my buddy to order one for me...
The above video was pretty cool, this guy put music to it nicely...enjoy