Closest I ever got to an imploding TV was the time some friends and I took turns throwing rocks at a small 13" RCA I found in the dumpster. Nothing spectacular, the glass was slowly cracked and the vacuum let out.
However I found this video on youtube. Fast fwd to the 1:05 mark. They heave a brick at it and break the safety glass, then they heave another brick and implode the tube....the glass flies at least 2 ft. from the set. Beats anything I ever saw when it comes to an imploding CRT.
http://www.youtube.com/watch?v=cHRxc...ure=plpp_video