David Brooks is easily the most articulate and intelligent Republican in any of the large Newspapers (NYTimes,Time,Newsweek,Slate,WPost,CHT,MST), and my favorite. Shields is also a very powerful force; the Hannity and Colmes show on Fox should model themselves after these two.
Even when Brooks can't make it, I think National Review's Ramesh Ponruru makes a great replacement, too! Great Podcast! Our national IQ average would go up tremendously if high schoolers were forced to watch and reflect on podcasts like this.