Visible crew/equipment: Each time Shaun goes to the store, you can see the reflection of the camera on the freezer's door. (00:08:00)
Visible crew/equipment: When the blue tux zombie walks in through the ever unlocked front door, in the shot facing Ed and Shaun as they get up screaming, two blue tape T-marks are visible on the rug, between the couch and chair. It is visible in a couple of shots, but gone in the rest. (00:31:50)
Visible crew/equipment: In the Jaguar, after Ed explains that he already adjusted the seat and Shaun shouts, "Careful!," when Ed pulls out of the driveway a seated crewmember is reflected on the side of the car. This does not refer to the zombie extras. (00:45:15)
Visible crew/equipment: At Barbara and Phil's house, just as the hooded zombie bites a chunk out of Phil's neck (before Shaun leaps over the car hood) the black mat with two long white marks is visible on the pavement, behind the second zombie (beside the car). It's gone in following shots. (00:46:30)
Visible crew/equipment: When Shaun scales up the side of the building to Liz's apartment the second time, just as he places the cricket mallet on the floor and begins to climb through the window, the steel tubing for the scaffold platform is visible just to his right. (00:49:00)
Visible crew/equipment: Throughout the film, the reflector screen and/or set lights are reflected in David's eyeglasses. (01:12:30)
Visible crew/equipment: Each time Shaun is walking to the shop, as he passes the blue car (after he trips on the pavement) he passes a house. Clearly reflected on the bottom half of this house's window is the boom microphone following Shaun.
Answer: Shaun's last name is Riley. It can be seen on a poster ad from Shaun's DJ days.