I like the subject of existentialism, but I haven't really read any of the existentialists. I've read the Myth of Sisyphus and The Stranger. I like it, but I'm not sure I would have if I were not consciously aware (or looking for) absurdist themes. I love Beckett though and have read a bunch of his stuff. Camus considered Melville to be an absurdist and I read one of his short stories, too.