I do like El Dorado, but I consider Cortez The Killer to be one of his greatest songs without question. I love the quoted lyrics (in fact, make that all the lyrics) and also love the introduction, it gives the song a really epic cinematic feel.

Other lyrical favourites of mine, off the top of my head, include Thrasher ('The aimless blade of science slashed the pearly gates'), The Needle and The Damage Done ('Every junkie's like a setting sun') and pretty much all of the lyrics from Crime In The City and Powderfinger.