There’s a neat new function in Snow Leopard, that I haven’t seen reported anywhere else yet. In previous incarnations of Mac OS X, some apps allowed you to access a specific folder by typing cmd+shift+G. This keystroke would reveal a small layer, where you could simply enter the directory you wanted to switch to (i.e. /Users or /usr/lib or /tmp). This didn’t work in all applications, though. Now with Snow Leopard and the Cocoa Finder, this works across the OS – even in Carbon applications like iTunes. Just press cmd+shift+G, and you can enter any (even hidden) directory on your system. Oh, and you’ve got full tab completition, just like on the Terminal app.

Update: A co-worker just told me that this feature has already been in the Finder before Snow Leopard. My fault. It may be new, though, that it works in every open- and save-dialogue now.