The breakout hit of Marvel NOW! might just be Jason Aaron and Esad Ribic's Thor, God of Thunder.
Check out what Jason Aaron has posted on his blog, it's Esad Ribic's covers for issues #1 and #2 that when put together form a really cool Thor, God of Thunder wallpaper!
What we see here is actually all three versions of Thor from Jason Aaron's story: the Thor in the past, the present Thor, and that's not Odin in the background -- but King Thor himself! Minus an arm!
Click to enlarge: