“Apollo, Apollo” is set on Jack Donaghy’s 50th birthday. The Season 3 episode uses the milestone to explore Jack’s anxiety about aging, his need for control, and his longing to recover the uncomplicated excitement of childhood.
Jack watches old home movies and becomes fixated on recreating a joyful birthday memory from when he was young. His elaborate adult celebration cannot compete with that earlier happiness, creating the episode’s central comic contrast between corporate success and genuine wonder.
The episode also follows Tracy Jordan’s dream of going into space. Liz, Kenneth, and Pete help stage an elaborate deception so Tracy believes he has experienced a space mission. Dennis Duffy’s return adds a separate storyline involving Liz and Jenna.
“Apollo, Apollo” is sometimes remembered mainly for its space-themed Tracy plot, but the birthday premise belongs specifically to Jack. It aired on March 26, 2009, was the sixteenth episode of Season 3, and was written by Robert Carlock.