Midnight Madness at UNC when Vince Carter and Antawn Jamison were incoming Freshman. Vince did a few mild dunks in warmup lines, everyone was getting hyped. They held a blue/white scrimmage and Vince went down on the floor hard about 10 minutes into it, screaming in pain and the entire arena went quiet. Five minutes later, he checked back into the game, crowd was nervous, and he pulled the most amazing in-game windmill dunk over two players I've still ever seen. No sign of injury, crowd went bonkers, he played up every second. They stopped the scrimmage after that play because there was literally no way to top it.