This thing called FileMatrix has been making it’s rounds on the blog scene. Personally I think everyone should build all apps like this. Just imagine the extra buttons you would get at 1600×1200 res? The uber-cool selling feature this guy publishes? “Manage files using up to 10 vertical columns”. Wow, I never thought about doing that.
UPDATE: Looks like the author is either seeing the light or found out everyone was linking to his site. The screenshot has been cleaned up since the original (as best as one can clean something like this up).