There have been a few interactive trailers recently for bigger films, and Iron Man 2 is the latest to gain one. It's a cool idea, as the trailer plays various scenes trigger off a panel that is highlighted above the trailer.

Select a panel and view much more information on the scene, character or location than you can see. There's more images, story information, and so on.

You can see the trailer right here, although some of the information does need you to squint in a little, I've expanded it as much as I can.

Here's the Iron Man 2 interactive trailer that comes through SuperHeroHype:

I must admit, I actually caught more detail in the trailer because of the small size than I did watching it big screen, never mind hte interactivity aspect.