Hooray for Irony!
President Thor is one of my favourite Ultimate Fantastic Four story arcs. It's only in three parts, so it's nice and simple, and you get to see what would've happened if the Fantastic Four didn't get their powers. This is the final part of the story arc, and it's awesome. I love the line the Super-Skrull says to Ben Grimm- "Congratulations Mister Grimm. You're officially the last surviving member of your species." What really makes this issue so awesome, though, is the irony that because Ben didn't get superpowers, he manages to save the day. Nothing like irony.