Actor Matthew McConaughey and director Christopher Nolan debuted a new trailer for their film Interstellar during a surprise visit to Comic-Con on Thursday. It was the first time either of the two has ever appeared at the San Diego convention. “Thought it would be a fun thing to come down and see what all the fuss is about,” Nolan said to the audience in Hall H, according to Variety. So far, audiences have seen only cryptic trailers for Interstellar.