These recent posts on Adobe TV might be up your alley:
Photoshop With Matt Kloskowski: Removing Distortion from Wide-Angle Photos
Wide-angle lenses often introduce distortion into photos. Tall buildings look like they’re leaning over, and, depending on how close you are to your subject, some things may look like they’re bulging or curved. This tutorial will show how to fix that.
Photoshop for Digital Photographers: How to Train the Quick Selection Tool
Improve the quality of your selections by first training the Quick Selection Tool. This simple technique shows you how to make better, more accurate selections in half the time.