When I'm ready to clean house, walk my dog, or embark on whatever task will allow me the time to listen to a podcast, the very first thing I do is read the podcast description. (I am a discriminating and picky listener who doesn't want to waste my time on something or someone that does not interest me.) This is one thing Patrick Keller does very well vs. many other podcasters out there regarding the podcast summary: his descriptive entry about who he's interviewing, their background/biography, and the topic of the interview is is very helpful in making a quick, educated decision regarding whether you want to press that "play" button.
Patrick researches his guests well and selects a variety of interesting people covering many topics. He watches, listens and reads up on their previous work and knows something about their background. He asks thoughtful questions and actively listens to what they're saying during that interview. Many times I have listened to podcasters ask their guest something that the individual had JUST talked about a few minutes before, indicating they were not paying attention during their session. That's disrespectful to their guest and embarrassing to the podcaster. He also doesn't interrupt his interviewee during the podcast and is always appropriately grateful for that person's time and effort.
Other items I appreciate are: the short intro into each podcast, no "paranormal news and happenings" segment or musical interlude before I finally get to listen to the speaker, and the bonus part--no commercial breaks! I'm not sure how Patrick can do that--not mention his sponsors, but I appreciate not having to fast forward during sales pitches.
Well done Mr. Keller...well done. Keep up the great work!