You know what though, I give Joe Rogan this, he knows his s**t for the most part. He's like the bridge between the MMA novice and the MMA junkie. He isn't the most knowledgable, but he knows enough to hold his own.
when it comes to jiu-jitsu, I would dare to say Rogan is probably the most knowledgeable commentator around, seeing as he is like a brown belt himself under Eddie Bravo. Striking wise is another story.