Actually, about 300 pounds. I just got rid of mine at Christmas time and replaced it with a Panasonic TC-P65GT30.
The old Diamond Series I had had a beautiful picture but I think the Panasonic is even better!
I know the feeling. My CRT was ISF calibrated and I thought it was performing very well even after all this years. The reality is that Plasma TV has come a long way and are far superior then what I have right now. good 540P/1080I and hello 1080P !! My living room will feel so much bigger now that the 325lbs gorilla will be gone.