Okay, I just finished listening to the whole thing. Very nice interview, Kornel! :) I'm surprised that it's your first time talking to them! (How did they fill 111 episodes of Roguelike Radio without talking to you?) :o Anyway, it was pretty cool to hear about the thought processes and design processes that go into your work. I'm glad to hear that you're planning to get back to AliensRL at some point, (I'm still pretty fond of that one) and I thought your description of the concept of BerserkRL was pretty cool. (Is there a playable version of that somewhere?)
One more thing:
"DoomRL, the joke that went too far..." You should totally use that line in your marketing! :D