Stewart took a three-month hiatus this summer to direct his first feature film, Rosewater, about a journalist's arrest and torture by the Iranian government, and it seems that his experience may have profoundly affected him. The 50-year-old host showed up for his first day of work looking a little worse for the wear -- and speaking in a different language.
"The Middle East has changed him. He's not even acting American. Get him a defibrillator and two Big Macs!" John Oliver, the show's interim host, says to Daily Show correspondent Jessica Williams.
Eventually, former Daily Show correspondent Stephen Colbert goes in "to break this man."