Today only (12/03/08), Maczot is selling Expandrive for $19.95. That’s 50% off the regular price of $39.95. if you’re unfamiliar with Expandrive, it’s a great little Mac app that allows you to mount remote servers on your desktop as if they were local drives. It’s extremely handy. I occasionally still bust out Transmit, my ftp application of choice, but more often than not I just mount the server with Expandrive.
I’ve never used it, but the company also makes SftpDrive, a similar product for Windows. It’s not on sale, but you Windows users may find it helpful.