Keen Keyboard Shortcuts
Seeing as I've been using Adobe products almost everyday for the past ten years, I've come to appreciate a number of keyboard shortcuts that aren't generally known or used.
General
Tab – Hide/Show Tools
Apple, Alt, Semicolon – Lock/Unlock Guides
Alt, Left/Right Arrow – Adjusts Kerning of Selected Text
Alt, Up/Down Arrow – Adjusts Tracking of Selected Text
Adobe Photoshop
Apple, F – Apply Last Filter
Apple, Alt, Shift, L – Auto Levels
Adobe Illustrator
Apple, Shift, O – Outline Text
Apple, F – Paste In Front
Apple, D – Repeat Last Transform
Apple, Shift, F9 – Hide/Show Pathfinder Pallet
Adobe InDesign
Apple, Shift, D – Hide/Show Links Pallet
Shift, F6 – Hide/Show Separation Preview

The Illustrator line tool magic Joey showed us today has to make this list now.