When Anya briefs the potentials on the Turok-Han 'ubervamps', she says "Holy water seems to run off these guys like they've been scotch guarded". However, in an earlier show of the series, Buffy used a bottle of Holy water against the first Turok-Han she fights, and his face got burned like a regular vampire's.
Both Buffy and The First in Buffy's body have a hoarse voice.
In the shots where Spike and Andrew are seen from the front riding the motorbike, the bike's headlight keeps shaking rhythmically even though they are riding a smooth highway. This is an indication that the bike was tied down on a trailer (using up all the front suspension travel) and towed behind a car for the shot.
At 9:38 you can see the reflection of the camera operator in the oven door above the stove.