Barry Zuckerkorn (played by Henry Winkler) says, "I missed breakfast, so I'm on my way to Burger King" and then jumps over the dead shark on the pier. This is, of course, a reference to Henry Winkler's character in Happy Days (1974) jumping over a shark while on water-skis, signaling the moment when that show lost its relevance. The phrase "Jumping The Shark" was made popular in the 1990's as a metaphor for when a television show reaches its creative nadir.
At some point Tobias (David Cross) is seen being depressed over TV/film roles he auditioned for but didn't get. He already made vanity license plates for these roles, one of them is for Dr. House (House (2004)) where the actor David Cross in real life auditioned for.
In this episode there are frequent references to Burger King, including Carl Weathers saying he can get promotional consideration if he sets a scene at the restaurant. This was soon after an episode of The Apprentice (2004) featured the teams competing to market a new burger for Burger King, which some critics panned as essentially an hour long commercial for the restaurant. The original title of this episode was "The Tendercrisp Chicken Comedy Half-Hour", in reference to a Burger King menu item. The producers of Arrested Development really did receive product placement money for the Burger King mentions in this episode, though in true irreverent Arrested Development fashion, they undermined the advertising potential of the unsubtle mentions with some rather more subtle digs at the chain and the whole idea of product placement. Two examples of this undermining are: 1) when Barry (Henry Winkler) "jumps the shark," it is simultaneous to his mention of Burger King - not a flattering juxtaposition, since "jumping the shark" stands for the moment when a TV show reaches its creative nadir; and 2) whenever a poster advertising the "Angus Burger" sandwich is visible in any scene, the letter "g" in the word "Angus" is partially or completely obscured, leaving a decidedly less appetizing name for the sandwich.
While infiltrating the Mother boy XXX contest, Buster (Tony Hale) and Michael (Jason Bateman) sneak in through a double door. When Buster stumbles through the open door, he leans on the closed door that hits Michael (Jason Bateman) in the face. You can see him nearly break character as he stumbles out of frame.
One of the Writing Assistants confirmed that around the 17:15 mark when Buster (Tony Hale) accidentally hits Michael (Jason Bateman) with the door was unscripted. Tony Hale didn't even know it had happened and Bateman just kept going.