Guests: Author John McWhorter, comedian George Carlin, former Canadian PM Kim Campbell, HHS Secretary Tommy Thompson, NPR radio host Sandra Tsing Loh

Topics: Religion, indecency in media, Madrid bombings

Guests: Comedian George Carlin, correspondent Katty Kay, economist Stephen Moore, The Dixie Chicks, talk show host Tucker Carlson

Topics: Presidential election debates, religion

Guests: Walter Maestri, Joe Scarborough, comedian George Carlin, Cynthia Tucker, conservative editorialist James K. Glassman, writer Kurt Vonnegut

Topics: Michael D. Brown, US political system, on race, on the Administration