If you want to imagine all of Tony Stark's experimental Iron Man suits watching over you while you sleep, or maybe doing errands and getting you 2-percent milk and those nice cookies from the fancy bakery across town, then this movie art will be very helpful.
Iron Man 3 spoilers ahead...
This key frame art comes from Rodney Fuentebella, and covers the big climax of the film where too many Iron Man suits take on a small army of super-glow-mutants. Check out a few more pieces of astonishing concept art below, and tons more at the link. [Rodney Fuentebella via Comic Book Movie]