* ActorAllusion: EdAsner's character is almost always seen in [[WesternAnimation/{{Up}} a bowtie]]
** Also in the episode "Me First", Madeline Zima plays a nanny. One of Zima's well know roles was of Grace Sheffield on "The Nanny."
** In "Pregnant Paws", Claire Coffee plays an animal boarder who contracts a serious infection from a cat scratch. On ''{{Grimm}}'', she plays Adalind Schade, a witch who places a curse on Juliette via a cat scratch.
* TheCastShowoff:
** A small one, but the season 3 premiere has Hank juggling oranges for a bit.
** Reshma Shetty sings Ave Maria in an operatic Soprano in episode 313.
* TheDanza: Jill Casey, who is played by Jill Flint and Dieter, who is played by Dieter Riesle.
* FakeAmerican: The all-American Dr. Emily Peck is played by British Anastasia Griffith
** Canadian Paolo Costanzo as New Yorker Evan R. Lawson.
* HeyItsThatGuy: [[spoiler: [[HappyDays Henry]] [[Series/ArrestedDevelopment Winkler]]]] as Hank and Evan's dad in the second season premiere.
** In 1x02, [[Series/{{Community}} Britta]] plays a ballerina.
*** And in the wedding movie, the Lawsons' cousin is "Fat Neil".
*** And in "Pregnant Paws", the shock jock is Abed. Oddly, his name's Garrett.
** In 1x08, [[{{Oz}} Tobias Beecher]] plays a illustrator, including a joke about the cartoon characters doing time.
** In 2x02, [[Series/TwentyFour Chloe O'Brian]] appears as New Part Newberg's stepdaughter
*** 2x09 featured [[Series/TwentyFour Ethan Kanin]] as General William Collins, Paige's father, who disapproves of Evan.
** In 2x03, Paul Wight AKA The Big Show appears as a famous movie star. Hilariously, they reference his wrestling name.
** In 2x08, Bill Belamy plays Aristotle philosopher-king cabbie of New York City who takes Jill and Divya for a night on the town.
** Paige does double duty as the pre-death version of the protagonist of Series/DropDeadDiva.
** Looks like [[Series/{{House}} Dr. Taub]] moved to the Hamptons and now knows nothing about medicine, but still likes high living and beautiful women.
** [[spoiler: EdAsner]] as the Larsen[[spoiler:/Roth]] patriarch in "The Shaw/Hank Redemption".
** Evan was Aximili-Esgarrouth-Isthill (Ax for short) on the live-action adaptation of ''Series/{{Animorphs}}''.
** There's also an in-universe example when Evan suspects Jack's doctor of being a former child star. [[spoiler: He's right.]]
** Apparently [[Series/HowIMetYourMother Loretta Stinson]] has something against HankMed.
** Maya from "Pregnant Paws" is [[Series/{{Grimm}} Adalind Schade]], which makes the cause of her illness an ActorAllusion. [[note]] She contracted a disease from a cat scratch which was how Adalind infected Juliette with a curse. [[/note]]
* OneOfUs: Evidently, ''someone'' who works on the show lurks TV Tropes: in the fourth season episode "Dawn of the Med," Hank uses the term "NinjaPirateZombieRobot" to describe one of Evan's old Halloween costumes.
** Evan is a Trekkie. When he finds out that Paige's ex-boyfriend is one, too--and has a private space company scheduled to launch ''next year''--he has a {{nerdgasm}}.