I'm a huge fan of the Three on the Aisle podcast, which discusses various theater topics from the lens of a critic. Critics Elisabeth Vincentelli, Peter Marks, and Terry Teachout discuss various topics in theater, and then go over some of their favorite (or least favorite) theater they've seen in the past few weeks, not only on Broadway but throughout the country. Their banter is quite lovely and funny, and they are passionate and almost never agree, which is so refreshing because they argue for why they think aspects of productions work, but are still believers that not everyone has to agree. Usually the topics revolve around a something current, such as race and casting, the role of revivals, adapting shows from existing works, the rise of filmed theater events, and things like that. Usually there's some interviews as well -- a couple weeks ago they had Laura Benanti, who was stellar and funny as always.
I'm subscribing to a few more of these, thanks for the recs guys.