I recently purchased and calibrated with the Spyder 3 Pro. I am very happy with the results on my 2 22" Samsung LCDs (the model number of the displays eludes me).
I mainly work with FCP w/ some color correction in After Effects as well as my still photography in Lightroom
It was a straight forward process, the spyder program walks you through everything. It took about 5-10 minutes or so to calibrate each display. The colorimeter in the pro also has an ambient light sensor which I thought was a nice addition.