Fry is certainly genteel middle class English, but don't forget that Ferguson is an *American*, he's naturalized and he takes it seriously, so he uses our caste system (he's upper because he's rich). Fry finds Americans too fascinating to be condescending to. Also their ancestors are famous for killing as many of each other as possible!
I love the no audience, he's speaking directly to you instead of an audience, and that fits his style.
Agreed. This is funny, mature, insightful. I would watch this format regularly. It was successful. The worrisome variable is the guest. You're not going to be able to get many celebrity conversationalist who can hold their own for a hour show. Hell, few people could do this. Even fewer people that tour the late night talk show scene.