Yeah, I did an optical drive upgrade on mine; then two weeks later had the hard drive die; then a month later, when I got a MacBook Pro, decided to put the recently-installed optical drive in a FireWire chassis instead, for use on the MBP (stupid lack of dual-layer!); and put the original eMac optical drive back in.

Three eMac disassemblies in a month and a half. The next time I disassemble it, it's going to be by brute force, with a hammer!