"And now, for my next trick, Debussy's Prelude to the Afternoon of a Faun"

Looking like a not-so-distant cousin of Lou Harrison, this YouTube guy ("Handsplay") turns in precise renditions of classical staples whistled through his hands. Thanks to the meticulous JF for this one, of the Overture to The Barber of Seville, complete with trills and ornaments, and some neat-o octave displacement at times. Intonation this good could displace a lot of professional flutists.