I've been pretty happy with Space Monkey (http://spacemonkey.com http://spacemonkey.com) -- 1TB of local and remote backup, $199 for the device and free first y

I've been pretty happy with Space Monkey (http://spacemonkey.com http://spacemonkey.com) -- 1TB of local and remote backup, $199 for the device and free first year, remote backup $49 after the first year if you want to keep doing it. And I have access to the full 1TB as if the files were local, even on my measly 120G macbook air, since the filesystem is backed by the network. It's kinda cool.