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Edgar A. Poe was more along the lines of darkness, death, despair and pain. Kafka is just sort of 'off' or sometimes almost bordering on sick and twisted but a great author no less. (if you like...

If the hugs were being given by a sort of nerdy, scruffy, long haired guy and he is wearing like a truckers hat, I think that was a Dave Mattews Band song but can't remember which one. It should be...

Try Wikipedia. In the search box just type the name of the song and it will tell you a whole bunch of stuff about it.

Try pretty much any System of a Down songs. Especially from the Toxicity or Mesmerize albums.

Try System of a Down or Tool and Metallica

Some EXCELLENT bands you should try are Modest Mouse, Ugly Casanova, the Pixies, Janes Addiction, The Shins, Fleet Foxes,The Strokes, Built to Spill, Kings of Leon that should get you started on...