5. Odin & Nick Fury
Two extremely different leaders, from extremely different worlds, with extremely different responsibilities... but both of whom wear eyepatches - these guys have to meet! As well as the possibility of sharing eye-based fashion tips, Odin and Fury's potential meeting could go either way - they could respect each other as leaders and work together with regards to strategies seamlessly, or they could clash over methods and priorities and, in particular, the role of Thor and where he is better suited to living and going about his heroic duties. Despite their obvious differences (and despite the fact that Odin is clearly the superior being in terms of power), it would be very interesting to see if they could work together or if they'd end up as rivals of a sort (and simply having Anthony Hopkins and Samuel L. Jackson on screen at the same time would be full of awesome).