[Joeboy]

It's a fair bit less dark, but you could give Big Train a go.

https://www.youtube.com/watch?v=1rEBtpWQ7x8

https://www.youtube.com/watch?v=s8ofz1OnlNI

https://www.youtube.com/watch?v=EtllWIiOTuA

Edit: The League of Gentlemen

https://www.youtube.com/watch?v=5wB0OkcCps8

[louthy]

Love Big Train, some seriously good sketches. Here's some more of my favourites (outside of the ones you've already mentioned).

Unfortunately my favourite sketch, 'Cake Factory', isn't on Youtube any more. That was where I first realised how brilliant Simon Pegg was as a comedy actor.

[1] https://www.youtube.com/watch?v=zcAqR-Hs9II - Join the Army

[2] https://www.youtube.com/watch?v=rxUm-2x-2dM - Do You Speak English?

[3] https://www.youtube.com/watch?v=Yyj5cv5FPWA - Eagle Line Super Train

[4] https://www.youtube.com/watch?v=rxiOfepOxe8 - Evil Hypnotist

[5] https://www.youtube.com/watch?v=TIIAQME1Uhg - Jockeys in the Wild

[6] https://www.youtube.com/watch?v=9GmmAUbfhMU - Champion sprinter

[7] https://www.youtube.com/watch?v=CKRBYGhqI8Y - On Call Surgeon

[8] https://www.youtube.com/watch?v=XMh9CDNQhBg - Office Politics: Jesus vs Devil

[Joeboy]

Cake Factory was indeed a great sketch!

[rwmj]

You missed the classic: https://www.youtube.com/watch?v=VKH9ECC_Qa4 (apparently not intended as an analogy for smoking, although it does work for that).

[mdp2021]

Big Train: directed by Graham Linehan - Father Ted, Black Books, The IT Crowd...

(And the guard of the hospital in Darth Marenghi's Darkplace.)