Absolutely. After messing around with various combinations of rsync/ssh/unison/s3/glacier/etc for a few years, I bit the bullet and paid for Crashplan. It's cheap - the family plan is ~150 USD/year for up to ten computers, unlimited.

It's a lifesaver. I've installed it on my parents/wifes/siblings computers and the piece of mind it gives me is immense - when I get the inevitable phone calls about the damn computer deleting that important file, I can either tell them how to recover it, or do it myself.