I purchased the "On-Wall TV Install - Includes Wall Mount Bracket and HDMI Cable (For TVs 41-inches and Larger) by DISH" and they told me the Panasonic 65" plasmas require a different mount due to the hole placement. They are offering a full motion mount instead of the standard tilt only mount for the same price. Something you might consider if you don't want to purchase a mount and do the labor yourself. They also will mount the tv on a brick wall for the same price as drywall.
I used a mount from monoprice.com Product ID# 6663 and it works perfectly for me. There's aprox a 3" gap between my TC-P65VT50 and the wall with this mount, it's solid and very inexpensive at $24. TIP: Buy 4 washers to use a spacers between the mount and the TV where you bolt it to the TV...you'll see why when you look at the back of your TV.