I've been toying with an idea for a combined brainfuck (er sorry BobTHJ)/ corewars match... by which I mean BF language and array but two programs fighting for the array space. I think if done right it would be a bit more like Robo Rally (if you've played that, wonderful board game) than core wars, with the ideal being to knock the opponent's pointer off by one thereby sending the code spiraling off somewhere.
Any interest? -Goethe