He’s back in the saddle, and Jon Stewart was as funny as ever during his big comeback episode of “The Daily Show” on Tuesday evening (September 3).

The “Big Daddy” actor, who spent his summer break directing “Rosewater” in the Middle East, appeared to be a bit out of sorts as fill-in host John Oliver visited him in his dressing room.

Oliver declared, "Jon's back, but I think the Middle East has changed him. He's not even acting American. Get a defibrillator ... and two Big Macs."

From there, Stewart went through a series of changes, from redneck, to Hitler, to rabbi, and at one point he did an impression of Miley Cyrus' 2013 MTV Video Music Awards performance. Check out the clip below!