Vivid Seats is the New York Post's official ticketing partner. We may receive revenue from this partnership for sharing this content and/or when you make a purchase. As he took the stage on Sunday, Sept. 10 at Atlantic City’s Etess Arena, Jon Stewart got in a good line about the evening’s lineup. “We’ve got the three stages of show business here tonight. Rehab, recovery and hospice.” The crowd laughed and the former “Daily Show’ host launched into 45 minutes of fresh, punchy material. However, like all good jokes, there was a kernel of truth to Stewart’s throwaway bit about his...