You want blacks that look like they're off? Put a light behind the TV. Perceived blacks WILL look like this:
Yes, that is what I see, with just a low level blue bulb on a lamp. Not the prettiest solution, but you can always spend some money on some LED strips to stick to the back of the TV.
I have a 60VT60 myself, and all it takes to get those blacks you crave, is to put a light behind the TV.
I have been doing this for years (last Plasma was a 65ST30), and it dramatically improves perceived black levels.
The brighter the bulb, the darker the blacks up until you start filling your room with too much light. I like blue because it makes my room LOOK like no lights are on, other than what the TV is outputting.
Experiment by putting a lamp behind the TV, and have that be the only light in the room with the TV. Also, you may have to take off the lamp's cover to get the desired effect, and/or try aiming the light where it distributes around the bezel more evenly.
CAUTION: A light directly aimed at the back of my VT60 (where there are grills) will cause some splotches to actually show up on the screen if you aim the light into the plasma's innards a certain way (only for the duration that the light is aimed in that manner. I aim my light towards the wall, not the TV...
Like everyone else, even the VT60 in an all blacked out room with zero lights and a black screen showing will still have a glow. Trust me, PUT A LIGHT BEHIND THE TV.