The End of Moonshadow
This is going to sound absurd, but the conclusion of the maxiseries had me in tears. I have know idea why either because the ending is cryptic and ambiguous. The entire run is fantastic and should be as acclaimed as Watchmen or The Dark Knight Returns, but unfortunately not many people have heard about it. I can't think of to many comics that have praise from Kurt Vonnegut and Ray Bradbury in the letter page. This is a must read and is in my opinion the greatest comic book ever.