Marv and I sit down and chat about the Ringo selections on Rob Sheffield's "100 Best Solo Beatles Songs" list.    As Dana Carvey might say, "isn't it conveeeeenient" that each claims one of the top four.      More seriously, we discuss the nature of such lists, how, when and why - and we talk about the thirteen selections.    Does Ringo deserve 25% of the take?     Is thirteen too little?