i just put a post on the general discussion board about the “WEEE” regulations in the EU, i sited phillips as an example. they design a phone a few years back called the “savvy”. that was designed for disassembly. it was put together using screws with threads that disintegrated when exposed to ultrasonic vibration, meaning that the phone literally falls apart. clever stuff.
have a look at http://www.weee-recycle.com for more info.