I've often said that I don't get on with graphic novels, but talking to dr_d, I realised that's not universally true; I got on very well with the collected Dykes to Watch Out For and with Persepolis. The common factors I can see there are (a) relatively simple monochrome artwork; (b) a relatively high words-to-images ratio; and (c) a political storyline filtered through (d) the experience of a small group of "ordinary" people. I'm not sure which of those factors are the most significant, but I will note that I like Calvin and Hobbes in black and white, but think it looks weird in colour. By way of additional context, graphic novels I have not got on with include Neverwhere (finished it, but felt distinctly "meh" about it despite loving both the book and TV versions) and Sandman (leafed through a couple of volumes on separate occasions and bounced off almost immediately both times, although so many people have recommended it to me that I may try again at some point). Given that, geeks of my friendslists, what other graphic novels should I try?