Vidcasts (I know, you said podcasts, but I like vidcasts more) are hit and miss for me. When I started homebrewing BrewingTV's first run with Mike, Jake, and Chip had wrapped up, but I think Chop&Brew hadn't really got going yet. Those were/are some good videos.
I've been watching the BeerSmith vidcasts for a while and most of those that I end up watching are good, but sometimes those topics seem odd to me. I think there is a whole episode about chilling wort. I know chilling wort quickly is important for getting proteins to settle out and allow the brewer to get the wort in the fermenter quickly so that it can be inoculated ASAP before any other microbe becomes dominant. There are several devices that are intended to help chill beer quickly that anyone who has thumbed through a homebrew shop catalog is familiar with. I can't imagine that a couple people talking about chilling wort for an hour would be entertaining.
Lately I've found the basicbrewing youtube channel has some interesting videos. Lots of odd ingredients being used. I've seen several videos where they're using too much sugar for my liking, and I don't think I've seen them drink a beer and go "Oh, we messed this up, this is awful". I know that this is mostly because if a beer is bad that it wont become a subject of a video, but when they experiment with ingredients as much as they do eventually I would think they'd have something go wrong. But I do like their videos because they try some wacky stuff that I just don't get around to. They even made a sour ale in the insta-pot recently.
I'm not a huge fan of CraigTube. He has made a few videos I've liked, but it feels like he decided a long time ago that his target audience was new brewers, and so he explains everything like he is talking to someone who doesn't know the first thing about homebrewing. Or at least, that is how it appeared to me when I was watching them several months ago. Maybe his recent stuff is getting better?