Nattyware's Pixie eye dropper (free)
http://www.nattyware.com/pixie.html
ColorSchemer also has an eye dropper tool (free) ColorPix
http://www.colorschemer.com/colorpix_info.php
ColorSchemer also has a nice color scheme picking software. Unfortunately, it only has a 15 day trial. I really enjoyed it when I tried it out, but the cost $40-50 is just too much right now. It is on my ever growing "want" list. They also have a ton of color schemes in their gallery to look at. Or they have an online tool:
http://www.colorschemer.com/online.html