The plasma may be a dying breed, but the ones that are left are undoubtedly some of the best the world has ever seen. Take Panasonic's 54-inch TC-P54Z1 for example, which wowed audiences (us included) when it was first unveiled way back at CES. The HD Guru recently had an opportunity to take this very screen into his abode for review, and after a labor-intensive (around "one hour") setup process, the gazing was officially on. Panny's engineers were able to slim the set down to an i