The Best Episodes of Real Time with Bill Maher Season 13

Neil Degrasse Tyson, Richard Dawkins, Adam Gopnik, Matt Welch, and Angela Rye.

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Esquire TV's "The Runner-Up" star Clay Aiken, "The Story" author Judith Miller, "Thomas Jefforson" author Jon Meacham, CNBC chief international correspondent Michele Caruso Cabrera, Center for American Progress president Neera Tanden.

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The Interview: Sister Helen Prejean. The Panel: Jennifer Granholm, Doug Heye, Lawrence Wilkerson. Mid-Show Guest: Talib Kweli.

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"Pretty Ladylike" author Senator Claire McCaskill (D-MO), WTF's Marc Maron, Rep. Donna Edwards (D-MD), "Conservatarian Manifesto" author Charles Cooke, "The Blue Zones Solution" author Dan Buettner.

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Jane Goodall, John Cleese, S.E. Cupp, and Ron Reagan.

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EPA Administrator Gina McCarthy, Georgetown professor Michael Eric Dyson, "The Selfie Vote" author Kristen Soltis Anderson, "End of Discussion" co-writer Mary Katherine Ham, and "Trainwreck" director & "Sick in the Head" author Judd Apatow.

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GOP Presidential candidate & Ex-Senator Rick Santorum (R-PA), Representative Dana Rohrabacher (R-CA), Ex-State Senator Wendy Davis (D-TX), Washington Post national reporter Robert Costa and Senior Editor for The Daily Beast Michael Weiss.

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"A Fighting Chance" author Senator Elizabeth Warren (D-MA), "Live Right and Find Happiness" author Dave Barry, "In Defense of Liberal Education" author Fareed Zakaria, "Bad Religion" author Ross Douthat and Roll Call editor-in-chief Christina Bellantoni.

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Bill's guests include comedy legend Billy Crystal, MSNBC "Now" host Alex Wagner, Ex-Rhode Island Governor Lincoln Chafee, consumer advocate Erin Brockovich, and ESPN commentator Will Cain.

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Chris Matthews, Governor George Pataki, Mark Cuban and Jorge Ramos.

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Bernie Sanders, Katrina Vanden Heuvel, Lawrence Lessig, Johann Hari, and John Feehery.

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Bill's guests include "Inside Out" actor Lewis Black, ex-representative Rick Lazio (R-NY), ex-senior CIA and FBI official Philip Mudd, ex-Ohio state senator Nina Turner (D-OH), and "Superpower" author Ian Bremmer.

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Author Salman Rushdie, cable legend Keith Olbermann, Daily Beast columnist Michael Moynihan, political columnist Linda Chavez and actor Wendell Pierce.

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Bill's guests include Angus King, Chrystia Freeland, Gavin Newsom, Andy Cohen, and Ben Domenech.

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Bill's guests include Democratic President hopeful, Senator Bernie Sanders (I-VT), Representative Luis Gutiérrez (D-IL), "¡Adios America!" author Ann Coulter, MSNBC contributor Joy Reid and Daily Caller's senior contributor Matt Lewis.

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The Interview: Michael Mann. The Panel: Mary Matalin, Steve Schmidt, Lt. Governor Gavin Newsom (D-CA). Mid-Show Guest: Caitlin Flanagan.

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Bill's guests include Jay Leno, Michael Steele, Dylan Ratigan, Asra Nomani, and Paul Reiser.

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This weeks guests include comedy legend Mel Brooks, Representative Joaquin Castro (D-TX), "Citizenfour" director Laura Poitras, BBC World News anchor Kitty Kay, and "The Entrepreneurial Instinct" author Monica Mehta.

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Celebrity chef & "Fresh Off the Boat" author Eddie Huang, activist Robert F. Kennedy, Jr., Daily Beast contributor Ana Marie Cox, Weekly Standard senior editor Christopher Caldwell, and G.O.P. consultant Liz Mair.

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Bill's guests include "Jeff Ross Roasts Criminals" comic Jeff Ross, actor and environmentalist Ed Begley Jr., Daily Beast columnist Ron Christie, The Other 98% director Alexis Goldstein, and Slate's "The Gist" host Mike Pesca.

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Ernest Moniz, Rob Thomas, Andrew Sullivan, Anne-Marie Slaughter and Patrick J. Kennedy.

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David Spade, Maxine Waters, Grover Norquist, Tulsi Gabbard, and Roger Stone.

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Comedy legend Jay Leno, literary icon Salman Rushdie, Ex-HP CEO Carly Fiorina, Chris Hardwick and Paul Begala.

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Ex-Governor Howard Dean (D-VT), comedian and "Black and White" actor Bill Burr, "America in Retreat" author Bret Stephens, Washington Post's Nia-Malika Henderson, and The Atlantic's James Fallows.

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Bill's guests include film-maker & "Carsick" author John Waters, "Heretic" author Ayaan Hirsi Ali, Democratic president Heather McGhee, and "By the People" author Charles Murray.

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