You've probably seen Joaquin Phoenix with moderately-long hair quite recently if you've taken a trip to a movie theater to see his performance in 'Joker,' but by his usual standards, his hair in 'Joker' is actually quite short.
Earlier in his career, Phoenix looked like a wild man. His hair and his beard grew almost out of all control, and this picture from 2009 captures him at the peak of that period. He almost looks like he's in disguise!