Last years was scarier. It was the same width, but round instead of long. People were moving a hell of a lot faster, you could barely see the stage for dust. That's not a hugely fast pit, though it's impressively big.
Devildriver is the best at getting pits started because they have everyone clear out the center. I saw them about a month back and they did the same thing (much smaller venue though) and they got everyone to get a kickass circle pit going. After them Unearth tried to get everyone to do a circle pit without having everyone clear the center of the room like devildriver did and they got no response, it was funny. Devildriver rules \m/
i thought this video was kool as hell...plus devil driver kicks ass. 25,000 fans and a circle pit *length was of a football field.Live at download fest 2007 YouTube - DevilDriver @ Download 2007
These guys are totally sick. I saw them not long ago and my god that was the best metal show I've been to (after LoG). The circle pit they got going at our show went as big as it could, from wall to wall, 10 feet from the front of the stage right up to the sound booth