Password protecting folders w/o encryption

Hey everyone. I was wondering if its possible to password protect folders without haveing to encrypt them. I have some (Ahem) "Movie files" that I want to block acsess to. Right now, all I do is just make the folder hidden and then make the folder I keep it in hide hidden folders. It works but its annoying. Many thanks for any help.

>>5
It may be used from the CLI or Windows Explorer (if you really use that, duh). What's good about it is it supports many platforms, doesn't require any installation, has a zero seconds setup time, has a free uncompressor, it's made of simple files you can move and otherwise operate regularly, and it's simple.

Of course, this is not filesystem compression, nor it intends to.

TrueCrypt sounds good too. I hope it has a CLI tool.