We've been following longtime Marvel Comics editor Tom Breevort's excellent Tumblr page, The Marvel Age of Comics, for a while now. In addition to sharing images of original art from classic Marvel superhero adventures, Breevort's recently taken to showing us classic Marvel covers, before they were retouched by editors.

With production on Iron Man 3 officially underway, we're all wondering just where the official start to Phase 2 of the Marvel Cinematic Universe will take us. What new heroes and villains will we meet? What new set-ups might we see? Well, according to one theory, we'll run in to at least one comic book Avenger in the flick's traditional post-credits teaser.

Image of the Day: Behold the genius of the Iron Man iron

Even superheroes have off days. We don't see it in the comics, but they're capable of slipping up, making fools of themselves and being jerks just like the rest of us. For proof, check out one animator's chronicle of the foibles of the Marvel Universe.