Been using Photoshop 6 for web graphics and photo editing. Still learning the ropes. What are your most-used techniques or hidden features?

I've been living in Levels and Unsharp Mask for photo stuff, and layer styles for web buttons. What am I missing?

Learn Actions. Record a sequence of steps and replay them on any image. Essential for batch processing web graphics. I have actions for 'save for web at 72dpi' that save me hours.

The pen tool is your best friend for selections. It takes time to learn but once you master bezier curves, you'll never use the magic wand again.

Layer masks changed my workflow completely. Non-destructive editing is the key to not hating yourself when a client asks for changes.