Very blatant in "Fugue and Rifts." The episode opens with an amnesiac Archer living the life of Bob Belcher from Bob's Burgers (complete with Archer-ized versions of the entire Belcher family). Both Archer and Bob are voiced by H. Jon Benjamin. John Roberts has a cameo voicing Linda.
In "The Papal Chase", Archer mentions that he prepared for a mission to save the Pope by watching episodes of Lucy, the Daughter of the Devil, which features H. Jon Benjamin as the voice of one member of a group of secret agent-like clergy workers (as well as the Devil himself).
Captain Murphy gets crushed to death by a Goz brand soda machine, the last name of his late voice actor from Sealab 2021, Harry Goz, whose character once spent in-episode months trapped by a fallen soda machine.
More of a Creator Allusion, but there are a few more allusions to Sealab2021, including a character opening up his own chest to show that he's a cyborg and space station having problems in Pod 6.
A possible one when Archer says to Mallory, "Wow you just don't get along with your neighbors anywhere." Jessica Walter, who voices Mallory, plays Lucille Bluth on Arrested Development. Lucille is known for never getting along with her neighbor, Lucille Austero.
Jessica Walter, Judy Greer and Jeffrey Tambor, with similar traits to their AD characters (especially Jessica Walter as Mallory, which can best be described as "Lucille if she were a cartoon character"). Add this to the numerous Running Gag and cut-based gags, and this show is pretty much a partial Arrested Development reunion show (at least until the new, Netflix-streamed episodes premiered).
One of Us: In spite of spending most of his time drinking, whoring, and killing, Archer has a surprisingly detailed pop culture reference pool that includes some pretty geeky topics. Few others seem to share his interests, and he's always getting annoyed when no one else gets his references.
Real-Life Relative: Malory's new husband, Ron Cadillac, is played by Ron Leibman, Jassica Walter's real life husband.
Most characters, such as Archer and Lana, were based on Atlanta-area models, while Brett and Len Trexler were based on their voice actors, Neil Holman (also the art director) and Jeffrey Tambor. Lana, by sheer coincidence, looks strikingly like Aisha Tyler (the producers once said they intended to model Lana after Tyler herself, but mentioned that if they waited for a spot to open in Tyler's stand-up, TV hosting and podcasting schedule, they still wouldn't have the character design done.) Mallory was designed with her voice actress (Jessica Walter) in mind, but is actually based on a model with a more "extreme" look. Finally, Ray is an interesting aversion of the Ink-Suit Actor: while his design is based on a member of the cast, his model is Lucky Yates - the voice of Krieger.
Additionally, while there's no indication it was intentional, Cyril◊ looks alarmingly like serial killer Robert Hansen◊ (with a little bit of his voice actor, Chris Parnell), though he was actually based on a friend of Adam Reed.
Cheryl's brother, Cecil and his girlfriend Tiffy are based on their voice actors, Eugene Mirman and Kristan Schaal, and Captain Murphy is Jon Hamm with white hair.
Too Soon: This tends to follow up on some character or other laughing at something that had just happened, typically alongside a Defensive "What?".
What Could Have Been: Before Judy Greer auditioned for the role, Adam Reed planned to write Cheryl out of the show in Season 1, as part of a running gag where Archer kept getting ISIS' secretaries pregnant. 1
The show was originally titled "Duchess".
Amber Nash, voice of Pam, is neighbours with the physical model of Pam.