ComicBookMovie via io9]
Also, there's this great retro poster for Captain America, featuring the classic Cap punching out Hitler image. Sadly, only 100 of these were made for the cast and crew, but I'm holding out hope a version will be available, since it would go great with my "Hope and Change" Iron Man poster. [This one via /Film]
For some reason, I've always loved illustrated posters, they remind me of the original Star Wars and Indiana Jones movies. Plus, how can the retro Captain America poster be anything but awesome. Heck, it's almost comparable to this work of art.