Jon Stewart Through the Years Photos Jon Stewart poses for a portrait in promotion of his film,"Rosewater," in New York, Nov. 7, 2014. Stewart, who hosts the political satire series "The Daily Show with Jon Stewart," makes his directorial and screenwriting debut in the film about a journalist who is detained in Iran. Victoria Will/Invision/AP Photo (L-R) Jon Stewart and Host Conan O'Brien during an interview on Oct. 20, 1993. Lesly Weiner/NBC via Getty Images Jon Stewart poses for a portrait backstage and waves goodbye after the taping of the last episode of the "Jon Stewart Show" in 1995 in New York City. Catherine McGann/Getty Images Jon Stewart and Chris Rock at the 1999 Emmy Awards held in Los Angeles, Calif., Sept. Frank Micelotta/Getty Images (L-R) Jon Stewart as Mel Gibson, Amy Poehler as soldier during the "We Were Soldiers That Knew What Women Want" skit on March 9, 2002. Mary Ellen Matthews/NBC via Getty Images Senator Hillary Rodham Clinton appears with Jon Stewart during "The Daily Show With Jon Stewart" on Oct. 8, 2003 in New York City. Scott Gries/Getty Images Jon Stewart, winner for Outstanding Writing and Outstanding Variety, Music Or Comedy Series for "The Daily Show," poses backstage during the 56th Annual Primetime Emmy Awards on Sept. 19, 2004 in Los Angeles, Calif. Jon Stewart is seen at Barnes &amp; Noble in Union Square to sign his new book "America" on Oct. 8, 2004 in New York City. President Barack Obama (L) tapes an interview for the satirical television show "Daily Show" with Jon Stewart (R) at the Harman Center for the Arts in Washington, Oct. 26, 2010. Comedy Central comedians and television hosts Jon Stewart (R) and Stephen Colbert (L) sing as thousands gather for the "Rally to Restore Sanity And/Or Fear" on the National Mall in Washington, Oct. 30, 2010. Jon Stewart holds the award for Outstanding Writing for a Variety, Music or Comedies Series in the press room at the 63rd annual Primetime Emmy Awards in Los Angeles, Calif., Sept. (L-R) Actor Gael Garcia Bernal, director/writer Jon Stewart and source author Maziar Bahari of "Rosewater" pose for a portrait during the 2014 Toronto International Film Festival on Sept. 8, 2014 in Toronto, Ontario. Maarten de Boer/Getty Images