You may have seen “A Young Doctor’s Notebook” during a late night scroll through the pages of Netflix and wondered if that’s Harry Potter and Don Draper, or if you’re just crazy. Well, good news: You’re sane — as far as I can tell. This is a really good, though often overlooked, bleak, British black comedy starring Jon Hamm and Daniel Radcliffe as older and younger versions of the same character, a doctor under a police investigation going through diary entries from his first days in medicine. With dark humor and incredible acting — did we mention Jon Hamm sports an English accent? — ”A Young Doctor’s Notebook” is also fun to drink to. The first season is up on Netflix, only four episodes, but it’s guaranteed to get you perfectly over served.