I have to take a second and rave about a recently out of beta service called Dropbox. Dropbox is a "cloud-based" file sync service and it's a life-saver for people with more than one computer. After recently getting a new desktop, I found it difficult to swap files between machines. It's no longer a problem with Dropbox. Even my work computer has my files synced to it. 
As an added bonus, I have the security of my files being saved up in the cloud (just in case), and the service even keeps a feed (RSS) of the most recent changes and additions to my box. Cool! Now I'm just waiting (along with everyone else) to get Dropbox to monitor folders outside of the default one. I'm using the free service (2GB) right now, but if all goes well, I'll definitely upgrade to the 50GB service and move my photos and music as well.
This definitely blows similar services like Apple's MobileMe (painfully slow, unreliable and not cross platform) out of the water. Plus the simple interface wins a ton of points from an IA perspective. Check out Dropbox at www.getdropbox.com.
