Harddrive shows full with Other

I have a Macbook Pro running OS X 7.5.2. Recently my hard drive shows that it is full. All of the items(audios, movies, photos, videos, apps) show 0 except for Other which shows 499.99 gigs (hd is 500 gigs). I keep getting the "your hard drive is full" message but I cannot seem to find any of these rogue files. All of my other files seem intact and accessible. Not sure how to approach this problem. Anyone come across this before?

You might want to give this blog post a read. It describes the problem and links to some software that should help you figure out what to remove.

BTW are you using Time Machine for backups. If so, some of the space may be taken up by local snapshot files.

I've come across the "drive is full" problem several times and it was due to Time Machine going berserk when the normal backup volume wasn't available and ended up doing its backup onto the boot drive.

It was easy to find using GrandPerspective which I found great to use:
Download GrandPerspective for Mac - Graphically shows disk usage within a file system. MacUpdate.com