Season 4 was very good, but it did feature one of the series' weakest episodes -- Metalhead. Not sure if it was mentioned in here but there was a deleted scene (not sure if it was ever filmed) where the guy controlling the robot dog was some Eastern European slob and you'd see him working from home dealing with his kid and whatnot. They cut it because they felt it didn't add anything.
"The Entire History of You", "Be Right Back" and "White Bear" are still the series' best episodes, IMO.
"The Entire History of You", "Be Right Back" and "White Bear" are still the series' best episodes, IMO.