TechTV's "Call for Help" program has started a weekly Photoshop tip segment using the skills of Alex Lindsay from www.dvGarage.com.
If you miss the show (or don't have cable access to it), you can see the tip demonstrated in a movie file on dvGarage.com (or hit a link from the TechTV website). There are also downloads to practice the skill demonstrated on the show.
This week's tip is on the use of the Pen/Path tool, which is a handy selection tool, but does take some practice to use. dvGarage and TechTV team up for PShop tips