He saved Dummy!
Mk 42 Collapsing after Pepper Died. I think the "Whatever" line wasn't him joking, it's because he already knew how he was going to use the armor to kill Killian.
All the jokes! The sheer propensity and density of the humor in this film had me smiling throughout.
The movie was significantly different from previous Iron Man movies. I am so happy about that. Often the temptation is to keep doing what you're doing, but that way leads to stagnation. Even James Bond has crappy entries, and most of those are due to confusion about what makes that series great (and profitable). Quantum of Solace was panned by quite a few even though it returned to 007's "Roots" after a fashion, with the Wide-spanning evil scheme and Gadgets.
Things I'm less happy about:
The Mandarin reveal felt like a waste of a great villain. I think it would have been better if they used Mandarin here for realsies, and then in IM 5 or so they do it the jokey way. Then again, this movie is a predecessor to every Marvel Movie, and in the way that every movie is a predecessor of every movie that came before it, all the James Bond movies and every movie where the Mandarins tropes were played straight. So I'm not all that surprised that they went a different way.
Not enough War Machine! Though, it worked sense Tony went suitless for much of the film, if Rhodes had gotten to stay in the suit it would have been weird.
Iron Man suits are subject to the
Inverse Law of Ninja Strength