Just a few hours ago I went to play some BlazBlue.  Right when the game started, my Xbox turned off.  When I turned my Xbox back on, I discovered that my Xbox 360 profile got corrupt.  At first I didn't believe it and almost shit my pants but, then I remembered "Recover Gamertag."  I'm very thankful for this feature and if I recall, PS3 doesn't have something like this but I could be wrong.  Anyways, I'm so glad that I didn't lose everything.  I have no idea what I would have done if I had to re-play every Xbox game that I own to get my Gamerscore back up.