Everyone in the office hates and mistreats each other constantly. It's a very hostile work environment - because Pam is terrible at her job.
In "Once Bitten", Archer—coming out of a hallucination—appears to claim that his father is Buck Henry. In a meta sense, he's right, seeing as Buck Henry co-created the ur-spy-comedy Get Smart. —Wack'd
In "Legs", Krieger says "Me too!" to Ray's "I piss and shit in a bag". It's a lot less weird when you remember that Krieger's apartment has a communal bathroom that's a literal shithole and going in a bag is probably safer and more sanitary.
The title "White Elephant" refers to the cocaine: it is a valuable, but ultimately burdensome possession which the owners cannot easily get rid of.
Possibly a cleverly-constructed pun: the cocaine is the elephant in the room (and even named as such) that Malory is avoiding talking about, it's white, and there is a (literal) ton of it - the layman's estimation of how much an elephant weighs).
Fridge Brilliance moment in the Season 5 Finale, to close a Fridge Logic moment from the season opener. How does the FBI fail to announce themselves when entering a raiding a building they know is armed and just go in guns blazing? Why is their gear so irregular that the people they've opened fire on can't tell that they're FBI? Answer: They're not the FBI, they're the CIA and this is an elaborate operation to get ISIS personnel to get them to sell cocaine on behalf of the CIA.
Although, not identifying themselves and wearing jackets that don't say their department on the front is a Real Life problem with no-knock raids.
Another moment from the Season 5 finale: Archer's old 'Mulatto Butts' ringtone gets funnier when it's revealed that since Archer is Lana's baby's father, Abbiejean actually does have a black ass mama and a white ass daddy.
Season 5 finds the group perplexed at Cheryl/Carol's decision to become a country music singer. They can't understand why she'd want to do it. The answer is simple: in her "dream the impossible dream world" she thinks it'll attract Archer to date her again. The key is in the lyrics to her songs. A good, clear example is the beginning of "Burn It Down," which starts off with "I saw you driving by in your El Camino Rio, Swagger never left your step. Trying to make me jealous with that blondie by your side, hey guess what, you did it again."
"Cherlene's Broken Hearts and Auto Parts" contains the lyrics: "It's been a long hard year, you know. And I spent it all out on the road, Downtown chasing a dream hoping he'd come chasing me. But in the end the whole thing turns around. You find a spirit, you find a cause. You sit right down, grab your guitar and write yourself a song" It seems like she actually admits it here.
She also sings "Eastbound and Down" on TV for his benefit. And there's the obvious "Baby Please Don't Go."
The season six opener has the team touring their rebuilt headquarters, now a sparkling and dazzling white. Malory is stunned, wondering aloud if she can even take her shoes off. She shouldn't, but not for the reason she's thinking — it's all a hologram covering a near-perfect restoration of the terrible, old office, including the legendarily disgusting carpet.
Isis in the Egyptian Mythology is a mother goddess who is often cunning and treacherous, who helps her son Horus to become king despite often mistreating him. Not unlike Malory Archer, head of ISIS.
In "Sea Tunt Part 1", Malory orders ISIS to recover a Mk. 28 hydrogen bomb from a downed B-52 so she can ransom it back to the government, but the image she displays is a wire diagram of Little Boy, the gun-type fission bomb dropped on Hiroshima. This makes no sense until Cecil reveals there is no bomb or downed bomber, so it's understandable she would have an inaccurate image.
Seamus, as a baby. He already has an implied addiction to alcohol, has a prostitute for a mother, doesn't know who his father is, has a tattoo of a man who frequently had sex with his mother on his shoulder (Of whom he can't be sure is his real father or not) before the age of one. This kid doesn't have a great start to a happy life already.
Which leads to Fridge Brilliance regarding his and Trinette's disappearance from the series: She doesn't want Archer causing any more harm to Seasmus.
The Reveal in "The Kanes". The CIA is suppressing Lana's father's research into biofuel alternatives to continue US dependence on OPEC-sourced oil. Slater justifies this by stating "You think the Middle East is messed up now, just wait 'till no one needs their oil." This is indeed a frightening thought.