Like many teenagers who were heavily into Silver Age Marvel Comics, I was blown away by the wonderful John Romita Sr. Of course, I was first exposed to his work through his amazing (pun intended) run on Amazing Spider-Man. I think one of the reasons I was attracted to his art was its similarity to Curt Swan. They both had clean and concise styles that served their features well. You could tell Romita did a lot of work for DC in the 1950's since you can see a little of their house style in his work. He mostly did romance work for DC and you could tell since he drew arguably the most beautiful women in comics. I think that's the reason I had him draw Mary Jane Watson in my copy of TwoMorrows' John Romita And All That Jazz hardcover book.
Grand Comics Database, I've selected several of what I consider his best work during his heyday on Spidey in the 60's. Of course all of his covers were sensational but these three stood out to me.