Continuing on my color scheme kick, here is a nice list of 25 Popular Color Scheme and Palette Generators by website CSS Juice.
No doubt you will be using some of these already, but you may find a few new ones to add to your bookmarks.
Here is a neat little tool for some ideas on your next website color scheme. When you input a word or phrase into Instant Color Scheme it will use Yahoo Images to pick 5 related images and then get the 6 most prominent colors from each.
Some of the color descriptions are off, but it does give you the hex value, so you can go by that.