Watch McConaughey Audition to Play Himself in Dazed and Confused
You'll remember that before he sold Lincolns and traveled into space for eternity, elongated vowel sound Matthew McConaughey had his breakout role in Richard Linklater's Dazed and Confused. His audition tape for the part, included in Dazed's Criterion Collection release, is further proof that Matthew McConaughey has essentially been playing shades of himself for the past two decades.
For reference, this is the scene in the movie he auditions with: