They're a talk show host's worst nightmare. Those uncomfortable silences, the guests who are feeling a little less than social or the all-telling lag time between taping and air-date.

Who's the latest talker to make viewers cringe? NBA player Carmelo "Melo" Anthony announced that he was making the switch from the Denver Nuggets to the New York Knicks after taping his guest spot on 'Conan.'

Only problem was that the episode aired after the announcement was formally made, making for quite some interesting trading conversation fodder between Melo and Conan O'Brien.

Check out more uncomfortable clips after the jump!