How can I hide my top menu bar on Mac OS X?
You have a few choices.


MenuFela, site down, claims to do this.
MegaZoomer claims to zoom an app and hide the menu bar. Not sure if this will work, for example, with the Finder.
MenuShade does a so-so job. Hidden menu, but the shadow is there and the space is not usable
According to this hint you can edit the plist of the app and have the menu bar become hidden. Add the following to the Info.plist in the app bundle:



&lt;key&gt;LSUIPresentationMode&lt;/key&gt;
&lt;integer&gt;4&lt;/integer&gt;