When Chuck and Sarah drink their antidotes, Sarah's vial has significantly more in it when she lowers it than it had when she had finished drinking it in the previous shot.
At the end of the episode, when Morgan and Big Mike are in the break room, the banana that Big Mike is eating changes sizes between shots. In one, it's eaten almost down to the peel. In the next, it only has one bite taken out of it.
When Sarah is inspecting Mason Whitney's body at the morgue, the "corpse" can be seen blinking.
When Captain Awesome is talking to Chuck about 'getting out his bike and riding it again' and the shot cuts to over Captain's shoulder, his jaw is moving in speech yet there is no audio with it.