It always irritates me when a character is talking on the phone, but doesn't leave enough time between responses for the person on the other end to have been carrying on a believable conversation with them. And then they always end the call abruptly without saying goodbye or anything.
http://i.imgur.com/VeNBg.gif http://i.imgur.com/gd5jC8q.gif
http://i.imgur.com/PKIy7.gif http://i.imgur.com/3p29JqP.gif