As Marvel gears itself up for its next round of gazillion-dollar-grossing movies, details are starting to trickle out on exactly what these movies might look like. And one particularly intriguing rumor is that Viggo Mortensen (Aragorn from Lord of the Rings) has been cast as Marvel's adventuring wizard Dr. Strange in the upcoming sequel to this year's Thor. Just a Twitter rumor at this point, so maybe keep this one to yourselves for now ...