Easy File Hider
"i debated between this app and another one which costs 3X the price of this one and I am glad I chose this one! It works just as it is described, and i was also able to hide folders on my shared hard drive via our air port express' USB port, I can't even explain how awesome that is. i have checked with my other macs and the files cannot be seen. I am running Lion 10.7.5 on a 15" i7 MBP"
-iamdreed -Mac App Store