background was the Oval Office. At the end of the interview the hosts kiddingly commented on his choice of backgrounds. But it turned out that's his actual office, not a fake background. Apparently it's a 78% replica. He has various memorabilia (I don't know if it's real or copies) including the red phone, Harry Truman's "The Buck Stops Here" sign, etc. He also panned over to show his Lincoln Bedroom.