here are a couple that I can think of
- Todd Richards' Trick Tips, Vol. 1: Snowboarding - Park and Pipe Basics (2002)
- Todd Richards' Trick Tips, The Next Level(Vol. 2): Snowboarding - Park and Pipe Basics (2003)
- Jumping with Jussi
Vids like this are good for getting a new perspective on how to do tricks and they give you a good basic starting point for learning tricks. but just because you know how something works in theory doesn't mean you'll be able to apply it without pactice.