On the October 26th episode of Penn's Sunday School, the boys were discussing self-driving cars and then Penn's route to work at the Rio. The couple of streets mentioned give a hint as to which part of town he lives in. It then took me about 90 seconds with Google Maps to locate his house armed with that much information and what little I know about his house and nearby environment.

No, I won't give you the address. This is part of the fun. I don't plan to do anything with the information, it was just an exercise. I have thought the same about Marc Maron when he talks about his neighborhood but I never got around to dinking with it for him. It's amazing how little information it takes to bootstrap this kind of search nowadays. Be warned, citizens.