This stuff always reminds me of "The Adventure of the Greek Interpreter" from The Adventures of Sherlock Holmes TV series (This is Season 2, Episode 2, original

This stuff always reminds me of "The Adventure of the Greek Interpreter" from The Adventures of Sherlock Holmes TV series (This is Season 2, Episode 2, originally aired in 1985). In this episode Sherlock Holmes and Dr. Watson are at 221B Baker Street, and Holmes gives a detailed demonstration of his observational and deductive skills by people-watching out the window.