Ep 21. Mama Mia

In 30 Rock season 3 episode 21 "Mama Mia," Liz Lemon's mother, Margaret Lemon, comes to visit and causes chaos in Liz's life. Margaret quickly inserts herself into Liz's work at the TV show and starts making demands, including wanting to meet Jack Donaghy. Meanwhile, Jack is dealing with his own family issues as he prepares to give the commencement speech at his alma mater and is reunited with his estranged father.

As Liz tries to balance her mother's demands with her work responsibilities, she also deals with her own insecurities about her relationship with boyfriend Drew. Meanwhile, Jenna Maroney is dealing with a personal crisis when she realizes that her age has become a hindrance in Hollywood and starts considering drastic measures to stay relevant.

The episode features several comedic moments, including Margaret Lemon's brazen behavior and Jack's interactions with his father. The episode also explores themes of family, aging, and personal identity.

Overall, "Mama Mia" adds another layer of depth to the characters of 30 Rock while providing plenty of laughs along the way.