A couple of nights ago on The Daily Show, Billy Crystal came on to promote not a movie, but an upcoming Funny or Die video. It was a little strange! But the video has now arrived, and it’s pretty loaded up with great people. It focuses on Crystal and Helen Mirren in a sequel to When Harry Met Sally that’s forced to become a vampire movie by studio exec Adam Scott. While the whole “Hollywood loves vampires!!!” thing isn’t exactly a novel premise, it’s a fun treatment of the idea. And it’s hard to argue with the cast, which, in addition to Crystal, Mirren and Scott, includes Rob Riggle, Maya Rudolph, Rob Reiner, Mike O’Malley and Mike Tyson.