Adobe Kuler for a while but have never used it until now. Kuler is a great color picking tool. You can start with one color or upload a picture and pick colors out of the picture to create a palette. I did this exercise to help me pick a palette for a surface pattern design I am creating. I am mostly drawn to bright jewel tones, but I tried a few different things. I really enjoyed using Kuler the interface is very smooth and intuitive and it's free. So play away! Have you used it? Do you like it? What other tools do you use to pick colors?