What I love abotu GateMUSH is the unique chance you get of having characters interact that normally never would. For instance, as shown here, River Tam from Firefly meeting with Archer from Fate/Stay Night. She made an allegory to the Gingerbread Man story when he asked her what she was running from. The little old man and little old woman represented the Blue Hands guys (they always come two by two, in the story, too). She said she jumped from fox to fox (world to world) in order to keep running. She wasn't sure what to make of Archer. Another fox that might eventually cause her end? Or something different that wasn't in the story?

So now they are peeking around the corner, and Archer has the best t-shirt ever.