Never Kill A Boy On The First Date - S1-E5
Other mistake: In the famous scene where Buffy tells Giles, "If the Apocalypse comes, beep me," she grabs her pager from out of shot. Trouble is, she's standing in the middle of her hall and there's nowhere she could have picked the gadget up from. (00:21:00)
Other mistake: When T.J. types in his height instead of Floyd's while searching for his dad's date on the computer, he never pressed the "Enter" key.
Other mistake: At the start when the Lexus is found it is shown as a mirror image as can be seen by the badge and registration number. (00:03:57)
Hikou Isle Murder Case: File 3 - S1-E15
Other mistake: A copper alloy statue knocks away like nothing a huge mass of gold ingots; gold is much heavier than copper, cumulatively the ingots weigh much more, and even if being simply piled on one another would cause them to be moved as the statue topples, it would never simply breeze through them.