With the death of analogue TV signals in most countries there is less noise and less risk playing with TV transmitters. We have all seen miniature FM transmitters but this is the first time we have seen a miniature TV transmitter.
It seems almost too simple to work but according to the author you can adjust the frequency by adding or subtracting resistors from the board. With a minimal part count we might just have to give this one a go for ourselves, this could even be a great basis for a Arduino TV transmitter shield!
You can find the full schematics and description at http://electronics-diy.com/electronic_schematic.php?id=836