Tools of the Trade: PS Tools and Tutorials Pen Tool [P]Tools of the Trade: PS Tools and Tutorials by we-HEART-photomanip
The pen tool is an extremely useful tool that many photo manipulators use in everyone of their works. It's Most often used to cleanly cut out objects and models from their original background, and while it's not the only way to do this it's in my opinion by far the best way. You can also create vector shapes, and use the pen tool to imitate the effect of line tapering (similar to what a pen tablet does)!
Pen Tool Tutorials
Make selections with the Pen Tool
Photoshop Top 40 #32 - The Pen Tool
Photoshop Pen Tool Tutorial: Creating Vector Shapes