I don't know if you have ever tried this, but its neat to watch. Place a CD in the microwave and set it for 6 seconds, no more. Otherwise you risk overheating the CD and it that does not smell good (most likely toxic, too).
We used to put CDs in the mic at an earlier job when they were bad or if it wasn't needed anymore.So here is the old "CD in the Microwave" video;
Here's the original trick I tried to duplicate, but haven't been able to, yet. This is what spurred the Microwave CD thing. Links to CD Bubble trick: