13+ seeds beating your rival in Round One do not count. In fact, try to leave your rival out of it entirely. Illinois overcoming like a 15 point deficit to Arizona with 3 minutes left in 2005 is one of my favorite sports memories. I think the game was in Chicago and the crowd had to have been 90% Illinois fans. It got to that point of crowd silence where their frustration met that low point in the game when you realize that you're gonna lose. At that point maybe 1 out of 20 fans are still reacting to the game but you can hear their despair. It went from that low point to probably the loudest decibel reading that place had ever been in just a few minutes. And most of the comeback was from made 3's which ignites a crowd that much more. It really helps that they kept showing Bill Murray on the first row and he wasn't being deliberately funny but he was still kind of funny. Throw in that West Virginia-Louisville game the same day and it might be my favorite day of basketball that didn't involve Kansas.