Here is the list of very good HDR tutorials, enjoy:)
General and Tutorial Collection
Digital Photography School: An Introduction to HDR
Photocritic Photography Blog: The Ultimate Guide to HDR Photography
HDR Photography: Tutorials, Tips and Stunning Examples
Speckyboy: 19 Tutorials for Creating Beautiful HDR Imagery
Graphic Design Free Resources: 10 Tutorials on How to Create Stunning HDR Images
Tutorial Blog: HDR Tutorial Roundup
Photomatix Pro
Vanilla Days: HDR Tutorial Guide Thing for Photomatix
Talke Photography: HDR Tutorial
Second Picture: Tone Mapping in Photomatix
Stuck in Customs: HDR Tutorial
Before the Coffee: Photomatix Pro Tutorial
Phototuts+: How to Shoot and Post-Process Professional HDR Photos in One Day
Digital Exposure Photography: How to Produce HDR Images
Photoshop
How to Create Professional HDR Images
Second Picture: Photoshop HDR
TalkingTree.com: How to create HDR images with Photoshop’s Merge to HDR
HDR Tone Mapping with Layers in Photoshop
Photoshop Cafe: Photoshop HDR Tutorial
PhotoshopSupport.com: HDR – In Photoshop Elements 8 Tutorial
Photoshop and Photomatix
PopPhoto.com: How to Create High Dynamic Range Images
Memoirs: Modern HDR photography, a how-to or Saturday morning relaxation
The High Dynamic Range (HDR) Landscape Photography Tutorial
Great site with lots of useful information. As a fan of you flikr photostream I look forward to going through your tutorials in order to improve my own HDR capabilities.