I sure haven't seen anything very memorable, thats for sure. Some of the "X-Files" episodes had really good horror plots, but "Twilight Zone" is my all-time favorite, and IMO one of the best shows of all-time.
Alot was horror of the mind too, not just some monster. (remember the ones with paranoid neighbors, or when the little boy controls everyone and everything?)
Very imaginative. ...Alot of delving into human nature.
I don't remember "Thriller", but do remember "Creature Feature"!