Sorry I can't remember (I knew someone would ask!), but it wasn't one I was familiar with, although I am a bit of a newbie when it comes to brokers.
http://www.instutrade.com/trading-accounts/
Alpha rings a bell but could be wrong...
On the course videos he has a smug little Beavis and Butthead-esque chuckle to himself whenever he makes some kind of bold declaration or asks a question of the audience.
Unfortunately this happens quite often in each video and is almost as annoying as his blazer and jeans combo he "performs"...