UPDATE: Video preview no longer available. Check out Gordon's full segment here.
CONCORD, N.C. -- Jeff Gordon has a history of making time for fans -- but this one might take the cake.
Last week, before taking on his final Brickyard 400, Gordon joined FOX's "Knock Knock Live" to surprise one of his biggest supporters.
"I'm nervous!" Gordon whispered just before knocking on the door to the fan's hotel room.
Gordon's segment will air tonight at 9 p.m. ET on FOX, but you can catch a preview of the appearance in the above video.