I haven't seen the Avengers movie, but don't go disrespect the Transformers movies now! Sure, I haven't seen the third one, but the second one I laughed pretty much all the way through. Too bad it's not marketed as a comedy...
The first shot of her is so damn telling of the entire series. Bent over a motorcycle, looking so much like a calendar girl I felt like a car-mechanic just by watching it. After that the movie got less serious. I LOVED it.