Little Britain is quite good for one episode.
The next episode you think may actually be a repeat of the first.
The next might be a new episode, but it may be the first repeated again.
The fourth episode may just be a new episode, but so far it is the same as the other three, even down to the exact same characters, lines, punchlines and camera angles.
This has gone on for over four series now. The exact same sketches performed in the exact same way... They even released a sketch book(!)