One of my favourites (I have many) has to be Supernatural.
The Worst episode of supernatural has to be series 1, episode 8 Bugs where people are eaten by bugs.
One of the best…it’s a hard one actually. They have so many good ones. I’ll go with… series 3 episode 11 Mystery Spot where Dean dies many times due to the hands of the trickster
Heeeeeat of the moment