Hi y'all-

I'm on the road and my powerbook (40 gig HD) has gone from having ~500 MB available to ~0, and I don't really know what's going on, as I've- only download a few powerpoints for work and received the usual # of e-mails.

Other than a huge itunes library (which I'll save to my external HD when I get home), I don't know what's taking up most of the space- have been saving Office documents and other files over to my external HD, and don't have much in the way of media files (pics, vids, imovie, garage band, etc.) so I don't have that many obvious places to look for large files.

Was wondering if:
- there's a best way to see overall what's hogging my HD space so I can start purging files I don't need.

- there are good places to look for things to delete that 1.) I don't need (e.g., temp folders, caches), and 2.) I can just reinstall when I get home.

Thanks for any help you can provide.