Angel

At 34:38 when Harmony is yelling at Danny, the fridge door is open behind him. Yet when she shoves him back, the door is suddenly closed.

Tamika worked at Wolfram & Hart and therefore should have been tested for human blood regularly, as all the vampires are, so she should have been caught at some point.

In this episode Harmony makes a big deal over the fact that she is a "right-biter" with Fred. But in just the previous episode, "Destiny", we see her doing a "left-bite" on Spike.

In the scene that Angel is listening to a tape while Harmony is reading him his appointments, his hair is shorter than in the next scene when he decapitates Eli.

It's pretty clear in the scene where Harmony is gulping blood from the thermos that it's empty - there's a easily-recognizable metallic echo rather then anything like a liquid-gulping noise.

What's Danny complaining about? His stuff's already in the microwave, and Harmony takes it out. The microwave wasn't running, so he wasn't heating stuff. Either he just put it in and let it set there, or it was done running. Either way it was hogging up space in the microwave, which is poor office-microwave etiquette.

In the scene where Toby's body is on the table in the lab, notice the first close up shot on his face. You can clearly see him blinking.

When we first see Harmony at the desk on the phone with her checklist, it has "To Do: Big Demon Summit" in big balloon letters and six checklist items. When we see the hand checking off the final item the letters are plain and there are just four items.