Philosophy, psychology, and music.
Nick Drake, Jimi Hendrix, Neil Young, Crosby Nash, Simon and Garfunkel, The Blue Oyster Cult, Donovan, John Lennon, Bright Eyes, Elliot Smith, The Mars Volta and Bob Dylan and so much more.
Fight Club, Donnie Darko, Harold and Maude, What the Bleep do we Know?
none
Nature: Man and Women, Out of the Trap, Catcher in the Rye, The Art of Happiness.
Alan Watts, Joseph Campbell