I've got my AMD Sempron badge, and my ATi Radeon badge on my laptop.
And it has a Windows one that I'm not too keen on but I'm not going to remove it because it says "Vista compatible" and that might up the value later on when Vista is the norm.
My current case isnt shine, so i cant be bothered by putting some badges on it, the shite inside looks nice on my pc imo. and the other one is on my 300MHz homeserver now Tweaked 4 kickass performance.. XD
GooGone can fix that but it is a bit of a pain, and it leaves your case smelling like lemons or oranges or something fruity lol. Not to mention it is a bit slimy/slick afterwards...did I mention it was pain?