It's my first tutorial so it's not that good. [ame="http://www.youtube.com/watch?v=eqxmznTAJjo"]Youtube - Brazilian kick tutorial[/ame]
Pretty good but I'd spell-check and re-read any text you intend to put with your videos before calling them finished.
Looks good, but I'm not sure if its the video or not but I would suggest after you do the kick to snap your head around a bit quicker
Although this is a Thai technique it's mainly associated with Kyokushinkai I believe. Glaube Feitosa (mentioned in the vid) is awesome at it. Watch one of his highlight films. In particular when he gets Semmy Schilt (who's 6' 8" or something) right in the face with it.
To my knowledge, kempo, hapkido, muay thai, and karate (and possibly others) all have had this kick, though it got its popular visibility mainly due to Kiyama and Feitosa (thus the popular name "Brazilian kick" even though it's nothing of the sort).