1234 had some of the best Morrison hype before it came out. He just hit the most salacious points, the most painful or awkward points, and messageboards and comics shops squirmed in the funniest ways. How incestuous things got so fast in FF, how everyone was attracted to doubles of who they couldn't have, how many different ways the central four could interlock, how helpless these extraordinarily powerful people were. (Johnny and Ben are fire and earth, natch, but is Sue air here and surrounded by water because that's Reed and attracted to Namor not for his fiery vanity that echoes her brother, but his water qualities... or is she water, and that's why she can douse the other three, finds affinity with Namor, and has the water issue... the permutations don't lock up, they just roll on.) Gorgeous, poetic comic, and the symbolism and echoes go so deep, rippling through the whole and beyond.
The first FF comics since the very first to give me that angry, sick, off-kilter feeling so strongly, and nothing really did, since, until Unstable Molecules.