Do you need new photoshop CS4 shortcuts? Perhaps Adobe stole your "R" and gave it to Rotate? Here is how you take back control! Photoshop > Edit > Keyboard Shortcuts
Here is access to pretty much everything! If you need to change a shortcut for one of your tools, click on the drop down menu called "Shortcuts For:" and you can pick "Tools" there. If you choose a key command that is already taken, Photoshop will warn you that the other function will no longer have a shortcut... which in my case, was fine and dandy!
I don't have to rotate my canvas a thousand times a day, but smudge and blur I must.