I am cross posting this from my website since there was some interest expressed in this kind of stuff:
Tonight, I'll just continue the Photoshop link theme. (In other words, I am boring again tonight)
Good-Tutorials.com has quite an extensive list of tutorials ranging from basics, photo effects, to scripting and animation.
Planet Photoshop is similar and includes Photoshop TV sections.
Absolute Cross has a nice site with tutorials broken into categories. Very easy to navigate.
Tutorialized.com looks more like a message board in design, but there is plenty of tips, trick, and tutorials there.
And here are some links to tips and short tutorials on Flickr.com:
I have some more bookmarked, but I will save them for the next time I draw a blank. Besides, those should keep you busy for a while.
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photoshop,
tutorials,
tips and tricks