If you've heard about Dropbox -- a virtual thumbdrive for moving your files between computers -- but never got to try it, you can use this affiliate link to sign up and get an extra 250MB of space on the top of the free 2GB (and so will I).
I've been using it since last winter to move stuff around between my work and two home computers, and love how it looks just like another folder and I don't have to upload anything through the browser. I can also send file links instead of emailing huge attachments. Magic.
(And if you prefer a non-affiliate link -- here.)