I probably should be promoting this since I'm now involved with it.
Every so often, I talk on the Internet with other Doomers about Doom-related things for Doomradio/Tango TV and this time it's for a show called "Program B" which is a series of discussions on different aspects of Doom Engine games and the community in general.
This fortnight's episode is about Doom 3 and speculation regarding Doom 4. I should note that the session could contain a bit of what could be considered "pro-classic-Doom" bias, but I feel that the discussion regarding the modern incarnations of the Doom Series is more objective than subjective in several places.
So, head on over and have a listen!