The song Lucille (Jessica Walter) sings at the General's office (and that we hear in another scene) is "Downtown" by Petula Clark.
When Maeby (Alia Shawkat) & Tobias (David Cross) arrive at the movie studio, they drive under a banner proclaiming Homeless Dad to be America's #3 comedy. This was the "rigidly formulaic popcorn movie" being filmed by Thomas Jane in episode 2..2, The One Where They Build a House (2004).
Maeby (Alia Shawkat) makes a reference to having lunch with Jim Carrey from How the Grinch Stole Christmas (2000). Ron Howard, narrator and executive producer of Arrested Development directed How the Grinch Stole Christmas.
A guy sits on Gob (Will Arnett)'s lap at Sitwell, like Gary (Abraham Higginbotham) in episode 2.4, Good Grief! (2004).