I've been meaning to post these for months now...in December I got to go to the Chiefs/Bills game and took a couple of videos highlighting the experience.
First we have this video of the Chiefs trying to score a touchdown on 4th down at about the four yard line. It's a FAIL and sums up the Chiefs season pretty nicely.
If you've never been to a Chiefs game, the crowd gets really into 1st downs. It's pretty much all we have to cheer for as touchdowns are pretty rare. Here's the 1st down cheer: