Superherohype has some POSSIBLE SPOILER scans from the UK version of SFX Magazine, purportedly showing Hugo Weaving holding what looks like a Certain Ridiculous Silver-Age Marvel Item in a still from "Captain America." This has been pretty heavily hinted at, but for those who'd consider it a POSSIBLE SPOILER the details are after the jump:
Hugo Weaving as pre-monsterface Red Skull, holding what would seem to be The Cosmic Cube. For those sans-context for that: What you're looking at is a Nazi holding up a Magic Wishing Rock. Yes, really.
It still trips me out that the various "Avengers" lead-ups are actually dipping this far into the stranger side of their universe right out of the gate - typically, stuff like this is the first thing a movie adaptation decides to drop. Awesome.