He's like a British Michael Cera.

Nah, not at all. He was hilariously brutal as the host of Buzzcocks. He's trying to be a genuine human being and for people who remember him on the show it does come off as awkward.

I think he's funny! I like that his fourth joke is a British retelling of a Jeff Foxworthy one.

Yes, Simon Amstell, he is literally on "Conan", the talk show hosted by Conan O'Brien. I don't quite understand your incredulity here; a lot of people appear on that show, and Mr Amstell is a fairly well-known young comic.

No, obviously the description means "Simon Amstell on the topic of Conan", implying that Conan O'Brien is the well-oiled dungeon boy of Simon Amstell's dreams.