Why do flat screen wall-mounts have to be so damned complicated? They're a pain to set up and go askew the moment you even think about jiggling a cable. The Hangman system avoids these problems with two ingeniously interlocking aluminium bars.
The Hangman is simple to install. One aluminium bracket is mounted onto the wall, the other onto the back of the TV -- the brackets then securely lock into one another. That's it -- the whole install takes about 10 minutes. Now granted, this doesn't allow you to swivel the TV as some other wall-mounts can, but how often does that need arise?