Retrieve Any File Via Email

The Murphy Mac weblog explains how to retrieve any file on your Mac using a simple AppleScript with Mail.app. Once you get it setup you can send an email to your home machine with a keyword in the subject and the full path to the file you want and the script will automatically email the file to you.
I know there are other ways like Back To My Mac or iDisk, but using email is a bullet proof way to get the file anywhere you can get email, which is almost anywhere.
Link to Retrieving a remote file via email
