uh.. xbox360 scratch your CD when you move the console, not the Gamecube... many time i have moved my gamecube while playing (my mom wanted to "clean" the dust... lol) and all my CD are still "Like-New" .

and while burning a CD on my PC i sometime move it too, and never freaking happen to me having a stupid disk failed to burn or something that just happen when you try to copy a big files at a too high speed