Watch a sneak peek of the upcoming episode of 30 ROCK Live Show Season 5 Episode 4 which airs Thursday, October 14 at 8:30pm on NBC.
Episode Synopsis: On show night, Liz Lemon (Tina Fey) grows increasingly infuriated when no one seems to remember that it's her 40th birthday. Just before the taping, Tracy Jordan (Tracy Morgan) becomes convinced that nothing is funnier than a performer laughing and breaking character, which he elects to do all night, much to Jenna Maroney's (Jane Krakowski) chagrin. Meanwhile, Jack Donaghy (Alec Baldwin) struggles with the consequences of his promise to give up drinking while Avery is pregnant.
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