By now you've probably memorized the "Avengers" trailer -- not to mention the great SwedeFest boys parody -- so here's a quiz: What parts were shot on an iPhone? The movie's cinematographer, Seamus McGarvey, admitted in a recent interview that he used the Apple device for "a couple of shots" in the movie that wound up in the trailer. But which ones? We can't tell, but if we had to wager, we'd guess either the close-up of Tom Hiddleston early on or maybe the interior shots of the Avengers hanging out and talking. Pretty cool -- and, remember, this is before McGarvey had Siri to offer lighting tips.