shadowplay
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I didn't see this in the OP and I haven't gone through all the replies to see if this has been mentioned previously, but I recently downloaded a handy program called Dropbox. Basically, it opens up a special folder on your hard-drive and everything you put in it is instantly uploaded to the net and sync-ed with all your other PCs and mobile devices, regardless of platform. You get 2GB of storage for free, although you can get additional free space by inviting your friends to join. You can also pay for more space if you need. No more emailing files to yourself, and it's so much more convienient than a flash drive.
http://www.dropbox.com
http://www.dropbox.com