Oh damn, where's that old, old old link I had? Give me a second; it involves tetris.
Edit: Damn, it doesn't seem to be up anymore ( Probably because it's so old...)
Also, Kotaku hates me right now. Every time I try to visit it, it shuts down my internet 0.o
Luckily, this very site [http://www.escapistmagazine.com/news/view/90387-HD-Tetris-The-Ultimate-Falling-Block-Game] covered the thing a while back. Basically, super tetris where getting just 1 line would take forever, so it's more of "how fast can you loose" rather than "How long can you last."
It took forever either path you took anyway...