David Letterman vs. Bristol Palin
David Letter had a lot of fun at Bristol Palin's expense when the teenager was pregnant. Some thought he crossed a line.
Naya Rivera vs. Lea Michele
Glee stars Naya Rivera and Lea Michele are reportedly beefing.
Mike Epps vs. Kevin Hart
On a radio show, Mike Epps referred to Kevin Hart as "overrated." Hart then told Epps to kill himself.
T.I. is furious with Azalea Banks, who recently took shots at his wife Tiny ... he also recently fought Floyd Mayweather over Tiny.
Sam Smith vs. Howard Stern
Stern believes the singer "looks gay." Smith simply wrote "ignore" when told of these comments on Twitter, but you just know he's seething inside.
Brandi Glanville vs. Alcohol
Okay, this isn't always necessarily a feud, as these two go well together sometimes. Things can also get ugly between them, however.
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