Buffy the Vampire Slayer

When invisible Buffy is going through the files at the social worker's office, one can briefly see her fingers grabbing her sister's file.

Spike's bedroom is in a cave under his crypt. Yet when Xander walks away from Spike's bedside and leaves the crypt the crypt door can be heard closing almost immediately. To do this Xander would have had to walk several feet, go up a ladder, then walk nearly the length of the crypt to reach the door. Xander would have to be impossibly fast to do this, as there is no door between Spike's bed and the main crypt entrance.

The keys on Doris' typewriter are being pushed at random, some keys simultaneously. The printout the supervisor reads should have had nothing but gibberish on it.

Every time that the invisible trio grabs or holds Willow the sleeves of her sweater are smooth. The fabric should still crease or rumple, invisible hands or not.

When Buffy is cutting her hair the bra strap on her right shoulder keeps moving back and forth.

Invisible Warren is knocked into the tub filled with colored balls yet you still can't tell he's there until he becomes visible again. He still has a body that takes up space,invisible or not, so there should have been a hole or gap in the balls.

Xander is looking down at the sidewalk when he bumps into the invisible fire hydrant. Even though the hydrant itself is invisible, the hole in the sidewalk and the water pipe under the hydrant should still be visible.

In the scene with Willow and Xander on the street the tire track from the van has a perfect mark of the tire tread in the middle. The entire track should be streaked as a tire spinning on pavement would obliterate any tread mark.

The sign in the window of the store the Trio are about to enter says "Bikini Wax Wednesdays" which is the day that this episode takes place.

Willow is trying desperately to quit magic in this episode, and we see her straining not to use it to move a book or to speed up a computer search. But when she sneaks into the Trio's lair and gets taken hostage she makes no attempt to use it at all. I know it's a plot point that the Trio has Willow at the arcade, but it seems highly unlikely that a powerful and magic-addicted witch like Willow would not try to use her power to defend herself.

After Buffy throws the second air hockey mallet at Warren another mallet can be seen still on the table near where Buffy was standing, but when we see the table again during the fight it's disappeared.

When Buffy types on Doris' keyboard you can clearly see the wires used to pull the keys down if you look to the left of the keyboard.

In the scene where Anya and Xander discover that the pylon is turning into a 'pudding' like substance, what looks like the edge of a light reflector can be seen on the right hand side of the screen.

In the beginning of this episode, Buffy throws Spike's lighter in the box with Willow's magic accessories. Later on, Spike reaches into Buffy's pocket and pulls the lighter out... how did it get there?

When Buffy goes gets the pizza box, she places it on the counter. In the next cut, you don't see it on the counter anymore.