I get a kick out the nimrods who sit there nodding along with a great tune, offer nothing in reaction other than vague approval and thank their audience for tuning in.
Some of the reactors, on the other hand, are very insightful. Here's one I like :
The woman seemed fairly clueless - though I could see where she might say that Ozzie sounded Satanic :) It was interesting that they fairly readily got the points, despite the large cultural / religious divide. One of the men seemed to be getting into the groove.
The white-haired fellow with those great eyelids is a sage.
Magnificent ! It's a shame that on the face of it there seems to be more money to be made on Youtube than on the stage as a relatively unknown opera singer.