I like this show. It's fun, has some interesting points and ventures into a lot of unexplained stuff. The other reviewers kinda give Joe a "stupid man" persona. Having listened to his Podcast for quite a while I can tell you that that is not true. I do however feel that he is "acting" as that is the persona that people know him for, and probably what he was hired to do. In response to a previous reviewer stating that all of Joe Rogan's merits being martial arts related that is simply not true, he is also a very successful comedian, which is what made him famous. He has always been involved in the martial arts, which combined with his comedy is why Dana White chose him to be the voice of MMA.
That being said, the show in it's self is pretty entertaining. They do talk about weird things. And they do have a lot of what may seem to be pseudo-science. That is the nature of the show, he's "investigating" things on the fringe. He couldn't possibly know everything about the things that he is talking to these people about. The ones that do choose to be interviewed are "experts" in their area of choice. While Rogan is just a fan of the strange and unusual.
I don't expect to have a lot of hard science in these episodes. That's not what the show is really about. It's about the fringe and unexplained. I would doubt a real scientist would bother even looking into the topics talked about on the show.
However, in my opinion he does ask a lot of interesting "what if" questions. You have to be able to think out of the box, and Joe is also not afraid to call BS on something that is just too out there. Especially when he asks his guests to show proof of something and all the can show for evidence is some story that some guy told some other guy that told their (the guest's) best friend.
Given that this is not supposed to be a hard facts in-depth type show, for what it is it's an interesting way to kill an hour and learn about some of the more off the wall things that people study.
