Best interviewer I ever had for a development role gave me a sheet detailing a (terrible) high level implementation of a ticketing system, gave me an hour to lo

Best interviewer I ever had for a development role gave me a sheet detailing a (terrible) high level implementation of a ticketing system, gave me an hour to look at it and then asked me what I thought about it and what I'd do differently. It got us talking for a long while and both of us learned a lot about how the other thought and worked. I still think about it, and found it brilliant. Downside is you can't have an HR clerk do the interview but I think that's actually a positive thing in the long run.