10:05 AM PST 2/13/2013 by Jordan Zakarin
The word of the day is: Versatile.
Sure, Joseph Gordon-Levitt was actually teaching kids the definition of "reinforce," but the real story here is how the 31-year-old can jump from writing, directing and starring in a film about a guido with a porn addiction, to smiling and playing along with a red puppet named Murray on America's most loved children's show.
Gordon-Levitt's film, Don Jon's Addiction, made a splash at Sundance; the wristwatch that Murray tried to destroy in the vocab segment, however, stayed in one piece -- thanks to some last-minute intervention and handy packing materials that the star brought along.
