comic book Ultron is as interesting as Ben Stein giving a lecture.
FwwwwwWHAAA?!
He's one of the greatest Avengers villains of all-time! He totally weaves in and out of the Avengers history. Hank Pym (Ant-Man, YellowJackaet, Giant Man) created him. He had to do with The Vision's creation. He was connected to Wonder Man's creation. He created Jocasta. And right now, Ultron Forever, is doing a great job telling a new Ultron story. He's a thinker villain that's two-steps ahead of the Avengers, but at the same time can go toe-to-toe with them in his Adamantium body.
This was also one of the best Avengers stories ever:
He's like the Avengers Magneto. A consummate threat that can never be truly defeated. About the only other villain that's as influential on the Avengers may be Kang.
...ANNIHILATION CONQUEST!!!