One of the nice built-in features on Macs is the quick application switcher (Command+Tab), but by default, Finder is always included on the list. It ends up making switching between apps a little more cumbersome, but blogger Josh Dzielak found a way to remove it permanently and cut down on your keystrokes.Since the whole purpose of using the application switcher is to make for an efficient way to swap between apps, the fact Finder is always there can trip up your flow a bit. You will need to dig into Terminal to get rid of it, but it's not too difficult. Launch Terminal and type the following command:
sudo vi /System/Library/CoreServices/Finder.app/Contents/Info.plist
This opens the Finder's main file. You'll need to add some text to it after dict note:
Save the file and Option+Right-Click on Finder and select "Relaunch Finder". You should not be able to swap between apps without Finder getting in the way. Hit up Josh Dzielak's post for screenshots and a full walkthrough.
Remove Finder from the Application Switcher in Mac OSX [Josh Dzielak]