ability to control people's sleep

This would be a great functional superpower if you were say a bank robber or jewelry store thief, etc.... That's if you could put an unlimited amount of potential witnesses and responding law enforcement agents to sleep when they arrive at the scene. And you can keep them asleep while committing the crime (masked to prevent identification from video cameras).

Maybe also wear platform shoes, a wig, a fat suit, etc.. to add a few inches to your height so to complicate that additional level of identification caught on security footage).