Check out this AIR application that lets you search and browse keyboard shortcuts in any Creative Suite product.
Here’s what it looks like:
This application contains a database of all of the keyboard shortcuts for all of the applications in Creative Suite 4.
To see all of the shortcuts, be sure to click “All Categories.” The default “Essentials” view shows only a small subset.
The information appears to be taken from the “Keyboard shortcuts” section of each product’s Help. If you want to search for keyboard shortcuts in InDesign CS4 Help, you can do that, too.
For information on editing keyboard shortcuts and printing a complete list of shortcuts, including custom shortcuts, see the Use keyboard shortcut sets Help topic.
Also see Mike Witherell’s handy Keyboard shortcuts for Adobe Creative Suite 4.