Aidan Stone (Bradley Cooper) shouts that Freddy's (Oliver Piatt) episode is 'the type of shit you do in the fifth season!'. This episode happens to be the first episode of Nip/Tuck's fifth season.
When Matt writes to Sean his daughter was named Jenna after a sitcom star from their church, he refers to Jenna Elfman, star of Dharma & Greg (1997) who is a member of the Church of Scientology.