Sarah Jessica Parker vs. Kim Cattrall - 'Sex and the City' tension led to the cancellation of a potential movie sequel.
Isaiah Washington vs. T.R. Knight - 'Grey's Anatomy' feud resulted in Washington's exit from the show.
Shannen Doherty vs. Alyssa Milano - 'Charmed' stars' rivalry affected the show's production and cast dynamics.
Nicolette Sheridan vs. Teri Hatcher - 'Desperate Housewives' feud created tension on and off the set.
David Duchovny vs. Gillian Anderson - 'X-Files' co-stars had a strained relationship during the show's run.
These celebrity feuds had a lasting impact on the TV shows they were a part of, changing the dynamics and leaving a mark on the entertainment industry.