The window Watley sliced a hole through in 'Kidnapped' has been fixed; now the hole is taped up with duct tape.
Appropriately, the nerds have 20-sided fuzzy dice in their car instead of regular dice. 20-sided dice are commonly used in role playing games such as Dungeons & Dragons.
Before Antagone shows up, you can see Hooker in the bank.
Why didn't Killface use his phasegun to blast Antagone.
Killface breaks the fourth wall. While Sinn and Watley speak through the soundproof window, Killface claims "We only have 11 minutes!" He then looks at the audience and says "for this part of the kidnapping".
When Killface, Sinn, and Phil were on the scaffold, you could see Killface has nothing on his head, but when they show the scene of Wally cutting the glass with his crab claws, you could see the black ski mask on Killface's head.
In the first episode "Meet Killface", when the Cap'n Crump brand cereal was first introduced, it was spelled as "Cap'n Crump" and featured red box art. In this episode it is now spelled as "Kap'n Krump" and the box art is blue. The only thing remaining the same as before is Taqu'il's image on the box.
If you look carefully as Xander presents his Awesome X action figure to the staff at the board meeting, you can see that the only other item inside his briefcase is a cupcake.
Killface's Ring tone
When Killface's cell phone rings during his ventriloquist act with Trent's torso, the ring tone is Dixie, a popular American song that was made famous during the 19th century.