From the Radiant Vista website: Every week a 15 to 20 minute video will be available for download. This video will feature a submitted image onscreen in Photoshop with a soundtrack, which will contain suggestions on getting the most out of your image in the digital darkroom. These suggestions follow a general workflow making it very easy to pick up tips and tricks.
The Photoshop Workbench videos vary in size between 20MB and 40MB.
A high speed connection is recommended. [Sorry, dial-up folks!]
http://www.radiantvista.com/workbench/
Each video is retained on their website for only two weeks, so if you are interested, be sure to check back each week to see the new one.
This week's new one involves extending the depth-of-field while shooting macro -- the photographer shot 5 images while changing the point of focus in each one -- using Photoshop CS2, the images were blended together using layer masks to show extended depth-of-field (DOF) in a final image. The process involved changing the scale of each layer (each separate image) to align the edges of the subjects due to size differences created by the change in focus of each image.
Let me know your opinion of these videos (if you're able to view them) - I think the subject material in the few I've been able to view is relevant, and the instructional manner of the narrator is clear and helpful.