About 17 minutes into the episode, when Michael tells Buster that he'll "take care of Lucille II" for him, his lips are not moving. It's common for mouth movements not to match words from rear 3/4 angles on the show, but this is the first incident in which the speaker's mouth isn't even moving at all.
The song Lucille sings at the General's office (and that we hear in another scene) is "Downtown" by Petula Clark.
Gob's chipped tooth and whistling is a reference to the time he chipped his tooth (and whistled) after biting into a candied apple.
The baseball game is being played at Milford Park. The Bluth children attended the Milford Academy.
Gob is once again trying to show a young male, presumably gay employee that his chair gives out when he leans back by having this employee sit on his lap and rocking them (he did it in "Good Grief!"). He also says the same; "It's not really doing it right now, but...", and the man on his lap is wearing the same as Gary.
Buster's Drill Sergeant has his uniform sleeves rolled up using the Marine Corps method not the Army method.
In the flashback to the magazine page, Lucille does not have the long hair that she had in flashbacks during "Whistler's Mother.
During the "On the next Arrested Development" gag, Tobias is in his bed reading Acting: Like A Man, the book he once wrote.
In the background while Michael and Oscar are talking, a sign that says "Parking in Rear" can be seen. Given how Michael interpreted "put it in her brownie", the double-entendre to this sign is clear.
Foreshadowing upcoming episodes:
One of the soft toys that Buster wins on the arcade game is a seal, much like the one that later bites of his hand.
The change machine Buster uses at the arcade clearly indicates that it takes only $10 and $20 bills, and will dispense change in the form of one or two $10 rolls of quarters. However, it accepts both Buster's $100 bill and dispenses loose quarters.
In "Top Banana" George Sr. stresses that "there is always money in the banana stand" because he kept $250,000 in the walls of the stand until Michael burns it down. Here we find out that the local youth play a prank on the Bluth family every year by throwing the frozen banana stand into the bay. It wouldn't be such a good idea to hide your money in something that may get washed to sea every Christmas.
When Gob is first seen leaving the apartment with the alcohol, he walks in the hall uninterrupted. However, later when Buster is shown walking in the hall to the apartment, we see him pass Gob right as Gob is leaving with the alcohol.
Michael's wife being named Tracy is a reference to this season episode "Whistler's Mother". Before Lucille has a chat with Mr. Vandenbosh, young Michael is very upset and among others, he says "Tracy won't marry me".
Ann's full name is Ann Paul Veal.
Right underneath Ann's yearbook picture, it said "Not Pictured".
The death certificate confirms that Lucille's maiden name is Jenkins.
Lindsay wears the "SLUT" shirt from the season 1 episode "My Mother The Car".
George Michael telling George Sr. that Ann is funny is a reference to a comment Gob made about her in the previous episode: "What, is she funny or something?".