As a slightly different option (obviously yes, Sandman, Watchmen etc, all great) if you like slightly more offbeat fare like Scott Pilgrim you could try Ghost Road.
Meanwhile, by some crazy omission, no one has mentioned Hellblazer or Swamp Thing, both great comics, even if they're a bit dated now.
Neil Gaiman is obviously a genius, but I particularly love Miracleman and Black Orchid.
Never been into the Manga thing myself, but my daughter has recently become obsessed with Black Butler and I have to say it's pretty good.
Meanwhile, by some crazy omission, no one has mentioned Hellblazer or Swamp Thing, both great comics, even if they're a bit dated now.
Neil Gaiman is obviously a genius, but I particularly love Miracleman and Black Orchid.
Never been into the Manga thing myself, but my daughter has recently become obsessed with Black Butler and I have to say it's pretty good.