I LOVE to edit photos! I tend to use USM on every photo (it's rare that I don't). Photo editing is my favorite part of making a LO and I think it can add so much to a page. Most of my editing is done via adjustment layers in PSCS3.
Thanks for looking!
Editing:
USM
Selective noise reduction via smart filter
Levels adjustment
Curves adjustment
Hue/saturation adjustment
Layer type adjustment
Sharpening
Hand-tinting