I frigging love steam.
The single best backup I had for games. I lose things, you know. Passwords, settings, discs, cd keys, operating systems, hard drives
.
Every game I have on Steam, can be restored to the exact state and settings i have, on any computer I want, simply by typing in my Steam user ID and password.
Don't need to chase no stinking patches, cd keys, or settings all over the place.
Steam does everything for me.
I love it.