Do you use Mac OS X Leopard or above? Do you know the shortcut Apple-? (Command-?)
Give it a try. It will increase your productivity for sure.
Currently I’m using a windows system at work and think about switching to a Mac. Some peers are using Macs already. In a pair programming session I stumbled about the fact, that you can not navigate directly to the menu entries. Pressing Ctrl-F2 and then using the cursor keys or start typing isn’t to best choice. I remembered that Neal Ford told me (The Productive Programmer) that you can reach any menu entry by pressing Apple-?. Next start typing the name (or parts) of the entry you are looking for. Select the one you’re looking for. Press Enter and you’re done.
Screenshots will follow after I bought me a Mac:)