[kejadlen]

On OS X, I can get directly to any menu item by pressing cmd+? and then using the search. This is better if you have a vague idea of what you want, although admittedly, Windows has a better implementation for keyboard browsing of menu items. I vastly prefer the former, though.

[StavrosK]

The former is preferable for complex applications such as photoshop, but the latter is absolutely indispensable for frequently-used applications, as it's much faster.