Hey Dereck, when I first saw it, my first reaction was "TKD switch kick! Pretty cool!". It wasn't until he started doing all the round-offs and cart-wheels that I figured out that he was Capoeira, not TKD. :P
I have been on the receiving end of those kinds of kicks from people that were good with them - they are powerful if done right!
"In case you ever wondered what it's like to be knocked out, it's like waking up from a nightmare only to discover it wasn't a dream." -Forrest Griffin