Sean with Terry Pratchett, TMNT brothers

Sean invited Terry Pratchett, author of the Discworld series of fantasy/sci-fi novels, to sit in on his panel.  Watch the video here.

By @JDianeAbela

By @terryandrob (Terry's official twitter)

There was a Teenage Mutant Ninja Turtle panel with Sean (Raphael), Greg Cipes (Michelangelo) and Rob Paulsen (Donatello). These photos are all copyright Getty Images.

Sean's Q&A Panel from NY Comic Con

Sean Astin's Q&A session at NY Comic Con with special guest appearance by Terry Pratchett, author of the Discworld novels. Sean starred as Twoflower in the Sky One production of Pratchett's "The Colour of Magic."

Rich Davis and Steve Covino hosted the panel.