That sounds like a really pleasant experience actually. I think the dialogue here is most important aspect. Most of the interviews I have done the interviewer gives me the problem and sits there silently while I work on the solution.
I could have worded the post better, but I definitely meant as part of the interview conversation. (I definitely know I am not the smartest guy in the room, nor do I want to be).
I had an interview recently where my solution was O(n^2), which I could tell was bad. I asked the interviewer if he code show me/code up the more efficient solution he mentioned previously. He mentioned that we didn't have time and dismissed my request which is very disheartening.
It is fascinating to me that comedians are included in this list. Perhaps because who they are influenced by is readily available information. It would be fascinating to see one of these tailored to specific communities such as scientists, business or politics.
I like these ALOT. No best practices, or you should do this better. It is about making something you love and get the code to production. I look forward to more of these.