Scott Trudeau wrote:

I also like Shift + Tab, it hides the all the menus with the exception of the Tools. I couldn't live without the left and right bracket keys. They adjust the size of just about everything... on the fly. The left makes the tool smaller and the right larger. Try them with the eraser, clone stamp, healing brush, and paintbrush activated. You will quickly come to the love the left and right bracket keys!

Thanks for the review.