Like him, I've been surprised by how much use I've gotten out of iCloud. I'm not about to switch to it wholesale from Dropbox or anything, but the little things like bookmarks, reminders, contacts, and notes being synced between devices make a big difference.
It's also nice to have the peace of mind that if I ever have to restore my iPhone, all of my apps, documents and even keyboard shortcuts can easily be synced right back to the device, all over the air. Or if my phone gets stolen, I can possibly remotely pinpoint its location with the Find My iPhone service. So cool.