Potential spoilers follow for Thor 2 and maybe even the Guardians of the Galaxy movie!
A new image still has surfaced online from Thor 2 of Stellan Skarsgard as Erik Selvig.
Check out the chalkboard behind him!
Not only do we see reference to the Marvel 616 Universe (what comic fans know as the "regular" universe) - but also The Fault!
Of course, Marvel Cosmic fans will recognize The Fault from the Dan Abnett and Andy Lanning run on Marvel Cosmic with the end War of Kings unleashing the T-bomb ripping open a rift in space that leads to the Cancerverse! DnA would continue with The Fault through Realm of Kings where Quasar would go off to investigate only to have an evil version (Darth Quasar!) come through. This would lead to the blockbuster event known as The Thanos Imperative which saw the Galaxy's Mightiest Heroes band together to not only take down the evil Lord Mar-vell, but also the Mad Titan Thanos! Star-Lord and Nova would be trapped in another universe as a result of their battle against Mar-vell and Thanos as well!
We have no idea if this is just a little Easter Egg that Kevin Feige through in to Thor 2 or if it will play into the Guardians of the Galaxy movie (or after!), but it's still a cool nod nonetheless. DnA have also visited the London set of the Guardians of the Galaxy movie on multiple occassions.