Dropbox
an almost magical way to share between computers
Dropbox has been a great addition to the bag of tricks in working with several clients with whom we needed to share (or receive) a large number of files. The service is free (for 2GB; upgrades are available for a modest cost).
Watch the demos to see how easy it is to manage this. You should get this even if you’re not a client! Works with Mac, Windows, and Linux machines.
