[pkulak]

I do exactly the same thing. Snapper is amazing. I've used it once, but only because it was a bit more convenient than downgrading the one app that got messed up.

I also used it recently when I tried to get the new Assassin's Creed to run. I knew it was a bit of a crap shoot, so I took a snapshot before I started compiling and installing the Git versions of graphics and translations libraries. After a couple hours I realized it wasn't going to work and just rolled my root directory back to before I started throwing packages all over my system. It was very satisfying. :D