Plot Playboy superhero Tony Stark (Downey Jr.) looks like he’s having the time of his life, but secretly he’s starting to crack from the strain of a mysterious malady. Meanwhile, deranged Russian Ivan Vanko (Rourke) is plotting to annihilate Tony, in the guise of super-villain Whiplash…Verdict Rourke and Rockwell make satisfying, complementary villains, while Downey Jr. delivers again. Shame this sequel feels inessential, over-busy and a little, well, mechanical. Nothing they can’t put right for Iron Man 3.