I recently went through a great training dvd by Tony Sweet called "HDR High Dynamic Range Photography Made Easy". Tony is a well known master photographer who does a great job showing why HDR photography is one of the most exciting options around. It's easy to use HDR for evil rather than good, but Tony does a great explaining why, when and how it should be used. Contains both actual camera work as well as processing with a variety of software, including Photomatix. Enjoyed it so much I just ordered another DVD by Tony.