Do you want to know what's new in BizTalk Server 2006?  Find out by watching this upcoming webcast.  You can learn about BizTalk Server 2006 and get Beta 1 here.  If you are interested in deep training on BizTalk 2006, here are a few options:

Business Process Integration & Workflow Conference
http://www.impactevents.com/bpiwf/Agendas.aspx

Deep Dive training for BizTalk Server 2006 Beta
http://www.quicklearn.com/deepdive.htm

Guerrilla BizTalk 2006
https://www.develop.com/us/training/course.aspx?id=316

There are quite a few BizTalk 2004 webcasts available here.

-Marc