2013 Michigan. The previous streak had ended up there and I was nervous as hell that it would somehow happen again. Ended up jumping up at the end and telling Hoke to go fuck himself.
A close runner up would be Phelps' 100 fly swim in Beijing when he was going for his 7th gold. I love to watch swimming and knew it was going to be a tough race for him but really wanted to see him get 8 golds.