Are You a Math Genius?
          No... it's a puzzle.

And he assembles the pieces --

                  LARRY (cont'd)
          Six piece puzzles dating from the
          1800s... traditionally, notched wood
          that assembles into the form of a
          seed burr --

-- into a remarkably snug-fitting BURR PUZZLE --

          Bill Cutler proved that there are 25
          possible notchable pieces to make
          solid six-piece burrs -- and they can
          be assembled 314 ways...

          Great -- he's not a psycho, he's a
          puzzle fan.
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