I've been using git-annex for this kind of synchronization for a while and have found it works quite well. It supports interrupted file transfers (via rsync), automatically keeps hashes of all your content, and lets you work offline effecively. git-annex is particularly good at synchronizing file renames between two machines: it actually tracks the renames so you won't have to re-upload anything like you would with rsync. It also supports more than one machine, if you want to make backups.

I would definately recommend trying it.

[Cut to: Ships Cockpit. The room is flooded with red light and the message "Danger" repeatedly flashes on the screens. Bender snores loudly. Enter Fry and Zoidberg.]

Fry: What's happening?

[Zoidberg turns on another screen that displays the extent of the damage to the tanker. There is a huge gash most of the way along the hull. A gauge at one side of the screen drops as the dark matter levels go down.]

Zoidberg: All 6,000 hulls have been breached!

[Fry falls to his knees.]

Fry: Oh, the fools! If only they'd built it with 6,001 hulls! When will they learn?

Wrong. http://en.wikipedia.org/wiki/Herd_immunity