I find that I tend to really songs that tell some sort of story, usually from a first person point of view. For example, Kate Bush's Experiment IV tells the story of the construction of a sound based weapon that goes awry. One of my favorite Genesis tunes is Home by the Sea, the story of a thief who breaks into a house, only to discover too late that it's haunted and that he will now be a permanent member. Genesis tends to have many 'storyteller' style songs. From the Rolling Stones we get Sympathy for the Devil.