I have nothing against his methods. Yes, he put customers at ease. But it's a false sense of security. And that is what I'm opposed to.
He is probably most famous for his "Dumb Starbucks" bit, he talked to a lawyer about it and it's pretty hilarious:
https://www.youtube.com/watch?v=Y4KrdjAPohc
Since this is HN, here he is hiring a Bill Gates impersonator to help a souvenir shop in Hollywood:
https://www.youtube.com/watch?v=SBzW1xUjwew#t=7m10s
Also HN specific, convincing taxi drivers to infiltrate uber and purposely get bad reviews:
https://www.youtube.com/watch?v=N9gbdv5cXKg
at 4 minutes shows the rides they give.