KeyCue, Secret Spy Folder Fight the Good Fight
Keyboard shortcuts can be a way to accelerate productivity, but their number can be overwhelming. The average OS X app alone has from 40 to 80 menu shortcuts. That's a lot of memorization for one program, let alone the multitude of programs an average user runs on a Mac. Wouldn't it be nice if, with a single key press, all the shortcuts for a program would pop up on your screen?
http://www.macnewsworld.com/rsstory/79130.html