360 killed my copy of Call of Duty 2!
Well, not in the way you might think.
I was quite happily playing Call of Duty 2 over XBOX Live untill I noticed a strange change of disk speed, a slow whirring, followed by a methodical ticking, I went pale....
I've had my 360 oriented upright for a while now, no problems, no scratches, but my copy of CoD 2 has a small fracture on the inner ring of my disk, it still half-works, but after running for about 5 minutes, the disk grinds to a halt, resulting in no sound in games.
I may be one of very very few with this problem, but if you want my advice, have your 360 laying flat!