Go behind-the-scenes of a live sketch comedy show. Watch as Jack comes back to GE; Liz gets a visit from an adoption agency caseworker; Liz sits next to Oprah on her flight from Chicago to New York; Tracy and Jenna conduct a 'social experiment; ' Jack hooks up with Liz's psycho ex-roommate; Liz thinks she has found the perfect mate; Don Geiss wakes from his coma; Jack falls in love with his mother's nurse; Liz has a disastrous first date; Jack gets the writers to come up with a name for GE's new pocket microwave; Liz launches a plan to find Jack's biological father.