Guests: Journalist David Frum, comedian Eddie Izzard, author Gore Vidal, former governor of Vermont Howard Dean, businessman Russell Simmons

Topics: Madrid bombings, renewal of the Patriot Act, young voters, voting machines

Guests: Actor Bradley Whitford, Rep Loretta Sanchez (Calif.), columnist John Fund, hip-hop mogul Russell Simmons; via satellite, Sen Christopher Dodd (Conn.)

Topics: Congressional resolution on Iraq, economic effect of immigration, voter fraud, second Republican debate

Guests: Journalist Michael Hastings, politician/businessman David Stockman, political commentator Rachel Maddow, economist Stephen Moore, entrepreneur Russell Simmons

Topics: Keith Olbermann, Tunisian protests, health care, Ronald Reagan's legacy, gun control, Tucson shooting