VIDEO : Nathan Fillion Responds to 'Castle' Cancellation

Nathan Fillion seems to be taking ABC's surprise cancellation of 'Castle' in stride. The acotr sent out a tweet saying, "Dear Every Director, It appears I have an opening in my schedule." Then he followed it up with another addressed directly to admirers, saying "Dear Fans, In whatever project I do next, loudly notice how unlike Castle and fresh and versatile I am. Thanks." ABC announced it was dropping the drama from its schedule this week, even after securing contracts for a ninth season from some of the cast.