I love the secretary test! Our CEO at Lucidchart used to sit right at the front door (best natural light) and it was always funny to watch how potential hires would interact with him. The smart ones recognize his face and immediately engage, and others don't say anything on the way in or out. Who doesn't visit the website of their potential employer and at least read up about the management team? Especially when at the time it was a startup of 10 people!