It's almost becoming a true NBA role: bench mob guy.
The skill of flapping a towel, high-fiving, jumping into people and making various faces expressing disbelief is rapidly starting to be an NBA commodity. I'm not even sure you need to know how to dribble a basketball. Just put on a suit, grab a towel and make your presence known for 48 minutes with relentless excitement over every little thing that happens on the floor.
The league has nicely captured the best of the best from last season here. In terms of Bench Celebration Power Rankings, it looks to me like everyone is chasing the Warriors.