Real Time with Bill Maher 5x22

Guests: Fmr Sen John Edwards (N.C.), journalist Joel Stein, Rep Sheila Jackson-Lee (Texas), MSNBC host Chris Matthews; via satellite, chess master Garry Kasparov Topics: Environment, biofuels, drug-resistant viruses, bringing U.S. troops home, Russian politics, Mukasey confirmation hearings, Ellen DeGeneres dog controversy.