Continuity mistake: When Ed and Shaun use Pete's car, the rearview mirror changes its characteristics between shots. Things such as being large with perfect 90° angles to being smaller and having curvier edges or being attached to the black unit on the car ceiling to being attached to the windshield. (00:40:50 - 00:41:40)
Continuity mistake: When Barbara dies, she is lying on her back on the seat. Later, when Liz and Shaun are talking about shooting her, she sits up as if she was lying on her front, with her head going backwards. If she was lying on her back then her head would have come forwards. (01:14:50)
Continuity mistake: At the end of the 'Queen Fight' - Shaun pushes John into the jukebox using the pool cue, as he does this he blatantly falls backwards to the floor, however the very next shot he is moving backwards whilst standing upright. (01:10:25)
Continuity mistake: After Ed kills his first zombie, there is a blood stain on the right of his "I Got Wood" emblem on the t-shirt. But when they are throwing objects at the two zombies in the garden, this blood stain has somehow vanished. (00:30:55)
Visible crew/equipment: Throughout the film, the reflector screen and/or set lights are reflected in David's eyeglasses. (01:12:30)
Continuity mistake: In the scene where Shaun meets Yvonne for the first time in the film, the nametag on his shirt is visible and then gets covered by his jacket as the shot changes between the characters. (00:12:40)
Continuity mistake: In the scene when Shaun, Liz and Ed are trapped behind the bar, the zombies are leaning over the bar. But in the next shot, when Shaun pours spirits over the bar and lights it, the zombies have moved back from the bar. (01:21:10)
Continuity mistake: When Shaun and Ed bring out the basket of mugs, pots and toasters etc., to throw at the two zombies, in one closeup we see Ed pick up a mug and a saltshaker, but in the next shot we see him throwing a wooden mugtree. (00:32:00)
Continuity mistake: As Shaun is giving the opening pep talk to his co-workers at the appliance store, his tie flips backward and forward several times. (00:09:00)
Continuity mistake: In the pub scene towards the end when the zombies are taking over, Ed lights up a cocktail, but then in the next shot when zombies break through the door and attack him, the rag is unlit. (01:20:05)
Continuity mistake: After Ed and Shaun pull up to Phil and Barbara's house, the garbage bins move around by the time the zombie falls backwards onto them. (00:40:30)
Continuity mistake: The field in front of Liz's flat is large and unfenced. Yet, when Shaun climbs up to her window, there is a fence not more than ten feet away. He couldn't have run round the side as the sound of the zombies are coming from the same direction. (00:46:25)
Continuity mistake: In the beginning when Shaun is at work and is talking with Liz on the phone, when they are done he puts the phone down. Two cuts later we see him putting it down again. (00:11:20)
Continuity mistake: At the Winchester, Liz knocks zombie John's eyeglasses off, but then it is back on his face only to be knocked off again. (01:12:45)
Continuity mistake: Just after Liz and Shaun have come out of the cellar, the shot zooms out and you can see a few people behind them trying to get into the pub. In the following shot the number of people trying to get in has increased. (01:26:25)
Continuity mistake: When Shaun and Ed are looking upstairs for Pete and Ed is about to go up, Shaun stops him with his arm. At first his arm is under Ed's hand. When it cuts, his arm is over Ed's hand. (00:34:00)
Continuity mistake: When Dianne tosses the tennis pole to Shaun, the coil at the end of it is facing towards him. When he catches it the coil is facing away from him.
Revealing mistake: At the Winchester, just before Shaun shoots naked zombie Pete, his underwear is actually visible. (01:24:05)
Continuity mistake: Shaun's "To Do" list, which he writes on the whiteboard, changes. He doesn't write an exclamation mark, and he swipes the marker pen through the word "OUT." However when we see it the following morning when he awakes, there is a exclamation mark after the word "OUT", and the lines he drew through the word "OUT" have moved and are now underneath the word. (00:24:05)
Continuity mistake: In the cellar, Shaun lights Ed's last cigarette and it appears to have barely caught on one side. The next shot, the cigarette's burned down evenly about half a centimetre, which means it's a different one from the one he lit before. (Tried this with a real cigarette before submitting. They just don't burn like that.). (01:25:50)
Answer: "Burn Down the Sun" by Daniel Mudford & Pete Woodhead, according to this site: http://musicfromfilm.com/movies/shaunofthedead.php. According to http://www.discogs.com/Various-Shaun-Of-The-Dead-Music-From-The-Motion-Picture/release/402748, it's not on the soundtrack (as it's just background music).
David R Turner