A fun script by Peter Segal made this worth a second watch. Leads Segal, Bell, Kunis and Brand are great fun to watch. The Apatow stock company is evident in supporting turns but the film doesn't wear out its welcome. The final puppet Dracula performance is the most inspired scene in the film and foreshadowed Segal and Stoller's involvement in the re-launch of the Muppets a few years later.
Maybe the best of the recent glut of Apatow comedies. Has a great ear for dialogue; some broad absurdities aside, this is a weirdly realistic-sounding screenplay, and it sensitively explores angles of the situation you would expect this kind of comedy to ignore. Segel really does give a great performance, and even Mila Kunis quietly shines in a borderline manic pixie dream girl role.