Relaunch Finder… from the Mac OS X Finder
Don’t want to dig out the Terminal or Activity Monitor to relaunch the Finder? No sweat.
Hold down Option and then right-click on the Finder icon in the Dock. You’ll now see an otherwise hidden “Relaunch” option, select it and Finder will quit and relaunch. It only takes a few seconds to reload.
On the other hand, if you’re already in the Terminal with a defaults write command, maybe it’s easier to just type the standard:
This also causes the Finder to relaunch, as does killing it in the Activity Monitor… but if you don’t have to leave the Finder, why bother?