Cheer and Present Danger - S2-E8
Audio problem: After Cherry states "phone number," as in deleting Phoebe's phone number while in a fight, Phoebe repeats it, in a more disappointed tone. But as she taps her finger on the delete button, the beep does not match up with when her finger taps the button.
Audio problem: Coulson is talking to a cowboy who sold a piece of construction equipment to some bad people. The cowboy pulls a breach-loader shotgun. Ward grabs the weapon and pulls the cowboy off his horse. Next the distinct sound of racking a shell into the breach of a magazine-fed shotgun can be heard, but the breach-loader is seen.
Natalie Luca (No. 184) - S4-E12
Audio problem: At the end of the episode when Reddington goes to see Natalie Luca (behind glass), he tells her that the woman she killed at the massage parlour was an associate of his. When Natalie says "She said if I didn't kill him, she would tell Hawthorne where to find us", her lips don't match what she's saying in the reflection of the glass.
Audio problem: Rollo's drummer establishing the tempo of the boat rowers is out of sync with the pounding of the drumbeat.