I noticed Macfuse showed up on the hotlist at iusethis recently, and decided to check it out.

This stuff rocks. You can transparently r/w mount dirs through ssh with a gui client. For instance that, means I can open remote webapps as projects in textmate and work on them. They also have a NTFS driver that lets you mount windows drives, and a spotlight driver that lets you mount smartfolders as normal file systems very easily.

I recently saw this video, which shows of a lot more cool stuff that seems to be coming for macfuse. RSS filesystems, picasa webalbums and more. Looks really neat.