iCloud is so much more than a hard drive in the sky.

"iCloud is so much more than a hard drive in the sky. It makes it quick and effortless to access just about everything on the devices you use every day. iCloud automatically and securely stores your content so it's always available to your iPhone, iPad, iPod touch, Mac, or PC. It gives you access to your music, apps, latest photos, and more from whichever device you happen to be using. And it keeps your email, contacts, and calendars up to date across all your devices. No syncing required. No management required. In fact, no anything required. iCloud does it all for you."

To watch the icloud video, go to:
http://www.apple.com/icloud/what-is.html