Reformed Forum is very good. It's kind of one a kind in some ways, especially if you're looking for something from a confessional Reformed perspective.
My favorite theology podcast is Unbelievable? with Justin Brierley. It features debates/discussions, both between believers and unbelievers and between believers on particular theological issues. It's pretty broad who all is invited on, but Justin Brierley is a very gracious host (an evangelical Anglican himself) who does a good job moderating the conversations. There have been many Reformed participants as well, but of course with the breadth, sometimes you can't fully agree with either side.
Bible Project is a good one. You won't always agree with everything they say, but it's hosted by several evangelical biblical scholars (from a non-denominational/baptist background). It's generally thoroughly enjoyable and presents texts in ways that make you think.
Some other podcasts I enjoy are more "one man shows" so might not be quite what you are looking for.
