Suffice to say, though, it manages a great characterarc for Tony Stark and his relationships, plus spectacular special effects and action sequences that never detract from the examination of how the armor is poisoning Tony literally while his self-destructive behavior is poisoning his life figuratively.
Every character got their arc, every character had time to develop and build relationships with other characters, and every character suffered some kind of challenge that tested them and forced them to overcome limitations and obstacles in order to be a strong link in the chain for the team.
While Ugly Betty creator and executive producer Horta comically suggests that Rhimes put Heigl's character in a coma, the Grey's show-runner says she has an "unbelievable" story arc prepared for Izzie in the show's upcoming season.