Jon Stewart is back again this year to host Night of Too Many Stars: America Unites for Autism Programs, the incredible live comedy event presented at The Theater at Madison Square Garden in New York. Stewart will be flanked by some of the best comedians in the biz including Chris Rock and Stephen Colbert, and the show will include everything from stand-up performances and sketch comedy, to short films—all in an effort to raise money and awareness for autism programs across the U.S. We talked to Stewart about his long-standing association with the event, and his passion for the cause. Be sure to tune in tonight, Friday, November 18th at 8/7c for the live broadcast of Night Of Too Many Stars only on HBO®!