Using duplicity is almost as simple as using rsync, and it gives you incremental backups as well. And encryption if you need it. And can back up over SSH like Rsync, or to a local path, or even to Amazon S3.

[edit] I wrote up how I do this, with examples and cron entries a few months ago: https://grepular.com/Secure_Free_Incremental_and_Instant_Bac...