Audio problem: At the beginning of the episode when Cordelia leaves with Pierce, she says, "Don't mind him". But her lips don't match the words.
Shibboleth - S2-E8
Audio problem: As Charlie leaves the Oval Office, he pulls the door behind him. When it stops moving, the audio suggests it has been closed fully ("ka-chunk"), yet it's obvious it has not been closed as we can still see the outer office's curtains at the right of the screen, confirmed further when C.J. steps forward and the camera pans right to show the entire door frame area, and the door open quite a bit. (00:37:30)
Irregular Around the Margins - S5-E5
Audio problem: From a front angle, Tony tells Adriana about how good his doctor is. Cut to a side angle and Tony's voice is out of sync with the image. Then back to the previous front angle and the audio syncs perfectly.
Inheritance - S3-E8
Audio problem: Benson and Stabler are searching Darrel Guan's room. When Stabler picks up the bloodstained pants, Benson 'says', "blood" but her mouth doesn't move. (00:28:05)
Audio problem: After Nasedo reveals himself in the morgue, there is a shot on Michael's face. There is no sound, but Nasedo can be seen in the foreground either talking animatedly or having an extremely localized seizure. (00:23:55)