If I'm to mention Giant sized specials, who can nearly remember the ultimate crossover Mag, Superman vs Spiderman (or vice versa). Memory's real fuzzy on this one, but I sure remember falling asleep with this one in my arms as a preschooler (wuz babysat at that tender age, in a friend o' the family's home-the elder son had this mag and I musta known a good thing...).

I do remember that it had Doc Ock AND Lex Luthor as the villains. I somehow recollect Doc Ock carrying Spidey in search of their DC nemeses...