Nathan shows off his best anger photobomb in the background of a Castle fan trying to grab a pic with Esposito himself, Jon Huertas.
While a production assistant is super proud of his prop and Stana stands waiting for her camera time, Nathan pokes his head out with an adorable photobomb.
Nathan photobombs his tv daughter in the very best way possible. Way to ruin a photo op! But that's the point, isn't it?
Poor Seamus. He's just waiting for another take on the set of Castle, but Nathan's gotta sneak up and be all creepy behind him.
In his time off from Castle, Nathan Fillion must walk around wherever he is and practice ruining other people's pictures. He uses his expertice on his Castle co-stars, and they don't even know it!
06.15.2011 / 02:27 AM EDT by Theo Jones
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