deadboy

I just spent the last 3 days in the fear that my computer had finally died! All of my e-mails, friends addresses, everything gone! My computer crashed reverting the hard drive due to bad software I downloaded for dj'ing, and I found out that Go Back had been sold twice and is now owned by Symantec. I've spent about 16 hours in the last few days trying to fix it, and it finally looks like everything is ok.
Does anyone have any good recommendations for backing up my entire system?
That was a close one!