Just figure out how you want it to move and buy a mount rated to handle that TV's weight.
Great choice of TV. I have a 37" Panasonic plasma, and for what it's worth, best "bang for the buck TV" brand out there. Affordable but still great quality. If you're just flat-out looking for the best TV you can get, that's Pioneer. Especially the Elite, with a combination of the best display in the world (pretty much fact at this point) and the crazies warranty in the industry. If you have an Elite, you can practically throw a baseball at the screen and Pioneer will replace it for you.
Also, on the wall mount, make sure you get cables with wall-rated insulation. If you have a house fire for any reason, god forbid, you can get nailed on insurance for not having wall-rated cables. Just FYI.
Grats! Enjoy your new idiot box!