27 celebrities you forgot appeared on 'House'

• "House," also known as "House M.D." is a popular medical drama starring Hugh Laurie.  
• The show featured guest appearances from a wide range of celebrities.
• Michael B. Jordan, Leighton Meester, and Cynthia Nixon are just a few. 

"House" is an unconventional medical drama which at one point was the most watched show on television.

The show's popularity was due in part to the protagonist, Dr. Gregory House (played by Hugh Laurie) — a brilliant but irascible infectious disease specialist who solved the most impossible cases. 

The Emmy-award winning series ended in 2012, but not before a slew of celebs made guest appearances during its eight-year run.

Here's a list of stars you may have forgotten made their way through the halls of Princeton-Plainsboro Teaching Hospital.  

SEE ALSO: 43 guest stars you might have forgotten were on 'Grey's Anatomy'

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Skylar Astin suffered a mysterious nosebleed in season eight.

Before breaking through as Jesse Swanson in the "Pitch Perfect" films, Astin appeared as a cheerleader who attempts suicide as his condition worsens.

Brandy was a hopeful recording artist in season one.

In a case of life imitating art, the singer played an up and coming recording artist anticipating a studio session with a famous jazz musician, John Henry Giles. He eventually arrives but her excitement is doused when Giles collapses.

Andre Braugher was Dr. Daryl Nolan in season six

In a departure from his comedic role as the deadpan captain Raymond Holt on "Brooklyn Nine-Nine," Braugher was House's physician at Mayfield Psychiatric Hospital throughout season six.