Biff makes his annual trip to Spring Training, where he for the second year in a row, he and Hideki Matsui perform Abbott & Costello's ""Who's on First?"" routine; Jerry turns Dave upside down to preview Kai Leclerc's gravity-defying juggling act; ""Dwight the Troubled Teen"" makes another visit to Alan's booth.
click here to see where to watch or .
Ready to Watch Late Show with David Letterman, Season 11, Episode 121?