The site you were thinking of might be this one:
http://www.jimloy.com/billiard/break.htm
Here's one of those weird corner banks in action, leski vs. mizerak at the the Cleveland Open - Leski tried an unlikely break shot, missed the rack and left himself underneath it. Steve was playing pretty well and had dumped a 130+ point lead on leski. So leski decided to go for it. He smacked the far right corner ball (the 15) with middle right english, about as full as possible and a medium firm (not hard) speed. The 15 banked cross side.
I think I'll play for that leave the next time I screw up and leave the wrong angle on my break ball and I'll be heading for the rail.