In Fool on the Hill by Matt Ruff, a magical woman named Calliope acts as a Muse for the protagonist of the novel. Though she is never explicitly said to be the Calliope of Greek mythology, she is immortal, magical, and is described as enjoying retsina and feta, both Greek foods.
Calliope is the name of a character in Francesca Lia Block's novels Ecstasia and Primavera, both of which are heavily influenced by myth.
In Nick Sagan's Idlewild, the main character, suffers amnesia after a power surge, referred to as the Calliope Surge. The author notes that the muse Calliope was the daughter of Mnemosyne, the personification of memory.
In the Xena: Warrior Princess season 4 episode "A Tale of Two Muses", a town of worshipers of Calliope is convinced to overturn their ban on dancing, a dictate they believe the muse herself handed down.
In the Frasier season 7 episode "They're Playing Our Song", Frasier thanks Calliope for the theme he writes for his show.
In television supernatural drama charmed, season 4 episode 9 Muse to my ear The Charmed Ones must protect the muses from a warlock who is trapping them into a magical ring and using their inspiration to make the Forces of Evil more powerful.
In episode #126 (Out of Sync) from the animated series Cyberchase, Calliope plays her lyre and she's one of the four Mount Olympus band members with Apollo the Greek god of music (who plays the gong), Himaropa the siren (who plays the horn), and the Beast (who plays the drums).
In Daniel Quinn's My Ishmael, the fictional planet Terpischore is a land ravished by dancing, with dancing paralleling the rise of agriculture on Earth. Dancing (in an unspecified manner) speeds up the growth of the natives' "favorite foods".
Terpsichore is a character in the 2007 musical Xanadu, which is based on the 1980 film of the same name. Her part is always played by a man in drag. She was played by Andre Ward in the original Broadway production.
Thalia features in the 1997 Walt Disney Pictures film Hercules, appearing alongside the muses Calliope, Clio, Melpomene and Terpsichore, who collectively serve as a Greek chorus. Portrayed as a short and plump, she has the deepest voice amongst the five Muses depicted and true to nature, often makes the funniest comments. She was voiced by Roz Ryan, who reprised the role in the subsequent TV series.
In the maxi-series 'Countdown to Final Crisis', it is also Harley Quinn who is temporarily bestowed the aspect of Thalia to fight for the gods.
Thalia is a character in the 2007 musical Xanadu, which is based on the 1980 film of the same name. Her part is always played by a man in drag. She was played by Curtis Holbrook in the original Broadway production.
A teenaged Thalia is the narrator and one of the three lead characters in Clea Hantman's Goddesses series.