I admit that my knowledge of the game of darts is limited to playing 301 and 'baseball' rules after tilting back a few at my favorite watering hole so I don't have much insight to provide here. In fact, I have no idea what's actually going on in this video from the PDC World Darts Championship.
All I know for sure is that Michael van Gerwen does something really impressive in this video and the crowd, at a darts championship mind you, goes absolutely insane.
Apparently van Gerwen throws something called a "nine dart leg", which is apparently equivalent to bowling a perfect 300. And if not for the very last dart thrown there just missing double-12, van Gerwen would have actually done it twice in the very same round. It would have been like bowling a 300, only to turn around and do it again the very next game. Or, put another way, it would have been like a pitcher throwing a no-hitter through nine innings, only to continue throwing eight more innings of no-hit ball in extra innings.
That's impressive, sure. But I'm more impressed by how berzerk the crowd at a darts championship can get. They even break into the now-obligatory en masse rendition of "Seven Nation Army" Sure, these people are whipped into a frenzy by witnessing a rare feat, but look at some of the spectators! There are people there dressed in costumes and everybody is waving signs like they were at a taping of WWE Smackdown. These people showed up for a darts championship ready to party.