Is there a movie/show which you have a hard time watching due to an annoying character ?

I often wonder what were they thinking when they came up with such characters?
I have a hard time watching the Lord of The Rings trilogy just because the way the Gallum character is portrait (his voice is so fake and annoying) *I’m familiar with the original character from the JJR Tolkien books.
Same deal with Star Wars’ Jar Jar Binks who thought anyone would like such an annoying character.(He sounds like Elmo on speed from Sesame Street)
Is there a sitcom/movie character which you believe took away from the whole show/movie and it would have been better off without him/her/it.