Some Plasma or LCD Wall Mounting HowTos

HomeTheaterBlog has documented a recent LCD television wall mounting and has shared the details for anyone looking to undertake the installation on their own. The installer lists the tools you'll need for the hanging and also covers finding an appropriate mount location, stud finding, cabling issues, etc.

About.com also offers some wall mounting instructions, including tips on handling situations where cables aren't (or can't be, for whatever reason) behind the wall:

We can either place an obstacle under the television, which would look odd, or we can cheat the eye with camouflage. I have a friend who had this very problem, and his solution was to create a molding that would be used as a cover for his cables. He painted the molding the same colour of his wall, and when placed over the cables it looks like part of the wall. Granted, it's raised about 2-3 inches off the wall, but it looks very natural. As far as supplies, small strips of wood (a 1x2 for the sides and 1x4 for the face) cut to the length of the TV to the floor should be enough to make such a piece.

Wikihow.com provides a more orderly and straightforward, step-by-step instruction set, if that's more your bag.