So Joss Whedon may have made a secret movie starring Nathan Fillion and other actors he's worked with before? At like the same time he was doing Avengers? The man's duplicity never ends! He's like a sneaky fountain filled with surprises ... and candy.
agreed x2. I was surprised a Jane Quote didn't make it's way in there somewhere, but awesome nonetheless. They can guest star the rest of the cast into Castle at some point, would not hurt my feelings ONE BIT.