The guy that maintains that site frequents the Fantastic Four MB and he's talked about "retiring it" one day because it takes a lot of his time. I hope Chris can be talked out of it. He did a great job.
Going back to the covers, there are so many to chose from, of course Byrne's #236 is near the top. It's too bad that Kirby was on bad terms with Marvel because Byrne had him next to Stan but demanded he be removed. He did eventually come back to work for Marvel.
This is a favorite Kirby cover mostly because it's one of the few times Kirby drew Spider-man on a cover and it's an early example of a cross over in Marvel. It's a continuation of Daredevil story where Doom swapped bodies with him.