I'm still too sick to think today, so instead I'm going to offer up a few videos of Supporters Groups for some of those other teams. So imagine these, except in Rave Green and Blue, and with a FULL stadium.
DC United supporters, post-game. After a loss, no less. (Love the drums.)
And the Chicago Fire's Section 8.
Next, my favorite, the LA Riot Squad (LA Galaxy) vs. Brad Guzan, formerly of their arch-rivals, Chivas USA. (This was 2006. Look how much hair Landon Donovan has!!!)
And some Columbus Crew supporters, proving that this doesn't have to happen only at home games:
Are we excited yet?