
Deliberate mistake: The floating contact mine that explodes at the end of the movie would never have been put in an evidence room in a police station. Barring that error for the plot's sake, FCMs weigh 450lbs and would have required a hydraulic crane and a cart to move it, not just a couple of guys. They also did not contain clocks. (00:42:40)
Answer: Just before "Auntie Jackie's sisters' brothers' boy' legs it, Danny is looking at the DVDs in the supermarket and there's a copy of Shaun of the Dead in the bargain bin...albeit the Spanish version! Only £4.99! It was released as "Zombie Party" in Spain but has the same front cover as UK release.