How to Restart the Mac OS X Menubar
Just a quick tip. If your menubar crashes in OS X it can be restarted by typing a simple command in the Terminal.
killall SystemUIServer
You can also restart the Dock by typing:
killall Dock
or the Finder by typing:
killall Finder
All these commands are case-sensitive.
I also wrote a menubar application i call "iRestart" which performs all these functions and more. It is available at my portfolio site here.