Last updated on Monday 20 January 2014 at 22:19 UK

Watch 30 Rock Series 3 Episode 21 Online Free

30 Rock Series 3 Episode 21PLAY

With encouragement from Liz and Tracy, Jack begins a search for his real father. When Tracy introduces his newly discovered illegitimate son to his friends at "TGS," Liz and Pete question the sons intentions. Meanwhile, Jenna and Liz fight for the spotlight when Jenna gets recognition for one of Lizs ideas.

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