Guest Star - Riki Lindhome
Riki Lindhome is an American actress, comedian and musician known as one half of the comedy music duo Garfunkel and Oates, for the Comedy Central series Another Period, and for her role as Dr. Valerie Kinbott on Wednesday.
Lindhome's acting career began with guest appearances on television shows including Titus, Buffy the Vampire Slayer and Gilmore Girls. In 2004, Lindhome made her feature film debut in Million Dollar Baby. Her later film credits include Hell Baby, Knives Out and The Wolf of Snow Hollow.
Lindhome formed the musical comedy duo Garfunkel and Oates with Kate Micucci in 2007. The duo built an audience through online music videos before releasing albums, touring live and starring in the IFC series Garfunkel and Oates in 2014. Lindhome later co-created and starred opposite Natasha Leggero in Another Period, which ran for three seasons on Comedy Central.
On The Big Bang Theory, Lindhome played Ramona Nowitzki, a graduate student who developed an intense attachment to Sheldon Cooper. She first appeared in the show's second season and later returned at the end of season ten and the beginning of season eleven.
Lindhome's other television credits include recurring roles on Enlightened, Super Fun Night and The Muppets, along with guest appearances on New Girl, Brooklyn Nine-Nine and Modern Family. She has also lent her voice to projects including The SpongeBob Movie: Sponge Out of Water, The Lego Batman Movie and the animated series Duncanville.
Riki Lindhome has guest starred in 2 episodes of Stuart Fails to Save the Universe.
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102. Spoiler: Zack's in This One as Ramona Nowitzki
Released July 30, 2026In the AI dystopia, Ramona Nowitzki is working the reception desk at Caltech when Bert and Kripke arrive looking for Sheldon and Leonard.
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107. Spoiler: Dexys Midnight Runners Get a Royalty Payment as Ramona Nowitzki
Released September 3, 2026While trying to reach Howard Wolowitz in Caltech’s engineering department, the group encounters Ramona Nowitzki, who is once again working at reception.
Other Shows
Riki Lindhome guest starred in 3 episodes of The Big Bang Theory.
206. The Cooper-Nowitzki Theorem as Ramona Nowitzki
Aired November 3, 2008
When a grad student, Ramona Nowitzki, falls for Sheldon, he is initially delighted to have somebody admiring and waiting on him. When Ramona's no-nonsense approach to keeping Sheldon productive sucks the fun out of his life, he's soon searching for a way to get rid of her.
1024. The Long Distance Dissonance as Ramona Nowitzki
Aired May 11, 2017
Sheldon's old admirer, Ramona Nowitzki, returns to the university just as Amy has gone to Princeton for the summer. Although Sheldon thinks their relationship is purely platonic, his friends question Ramona's motive.
1101. The Proposal Proposal as Ramona Nowitzki
Aired September 25, 2017
Amy finally meets Ramona, the woman who kissed Sheldon.