ColorSuckr extracts color schemes from photos
There's also a bookmarklet that you can add to your browser's toolbar. Clicking it gives you a choice of any image on the current page. Once you've got an image, ColorSuckr will give you a draggable selection of colors, complete with hex, web safe and RGB info so you can get them exactly right in your designs. It's a unique way to get a good palette, and especially comes in handy if you're working on a layout that has to match a photo.