The Adventure Zone is good for the same reason as Dimension 20. A lot of DnD 'actual play' podcasts are people who play a great game of DnD, but don't make a great podcast.

TAZ is a bunch of comedy podcasters who decided to play DnD for a goof, and it works. The first arc has a rough first couple episodes, but it turns into one of my most beloved pieces of media across any format.