Liz and Pete keep things running at TGS. Or they try they hardest to do so, at least.
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Pete Hornberger (Scott Adsit) of 30 Rock fame.
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30 Rock Quotes

Ambition is the willingness to kill the things you love and eat them in order to stay alive. Haven't you ever read my throw pillow?

Jack

Liz: No breaking. Promise?
Tracy: I promise. I swear on my mother's grape.
Liz: Did you say grave or grape?
Tracy: Yes. Goodbye.