Usually (but not always) the first 15-20 minutes of the same podcasts. It like after roughly that amount of time, there's nothing else to talk about, so they start fielding lame questions or start doing random jibber-jabber for sake of filling the other 30-45 minutes.What are the other 1/3 non-useless filler podcasts you've heard?
Podcasts share one thing in common with porn movies. In both cases, the fast forward button is your friend.