There is nothing better than an engaged crowd of people that are watching and cheering a game.  The roar of the crowd during big plays is so fantastic.  The best roar of the crowd I've ever heard was the hail mary against BSU.  Our crowd went nuts.   Also, the crowd of BYU fans at UCLA in 2015 when we took the lead late.  That was awesome, we were louder than the home team.  So much fun.