I think what I love most about the show is the dialect.

For example here is the start of ;

Black Adder III, Episode 3

Nob and Nobility

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Miggins: [dancing about by a table of two customers in her coffee shop]
Oh la la! [laughs happily]

[Edmund Blackadder, butler to the Prince Regent, enters]

Edmund: Ah, good morning, Mrs Miggins.

Miggins: Bonjour, monsieur.

Edmund: What?

Miggins: Bonjour, monsieur -- it's French.

Edmund: So is eating frogs, cruelty to geese and urinating in the street,
but that's no reason to inflict it on the rest of us.

Miggins: But French is all the fashion! My coffee shop is full of
frenchies, and it's all because of that wonderful Scarlet
Pimpernel. [an odd squishy noise is heard occasionally,
starting now]

Edmund: The Scarlet Pimpernel is >not< wonderful, Mrs Miggins. There is no reason whatsoever to admire someone for filling London with
a load of garlic-chewing French toffs crying "Oh la la!" and looking
for sympathy all the time just because their fathers had their heads
cut off.

I'll have a cup of coffee and some shepherd's pie, please.

Miggins: [put off] We don't serve >pies< anymore! My French clientele
consider >pies< uncouth.

Edmund: I hardly think that a nation that eats snails and would go to bed
with the kitchen sink if it put on a tutu is in any position to
preach couthness.

So what >is< on the menu? [he picks up the small menu and flips it
over looking at it casually]

Miggins: Well, today's hot choice is Chicken Pimpernel in a Scarlet Sauce,
Scarlet Chicken in a Pimpernel Sauce, or Huge Suspicious-Looking
Sausages in a Scarlet Pimpernel Sauce.

Edmund: What exactly is Scarlet Pimpernel sauce?

Miggins: [she uses her hands to demonstrate as she speaks] You take a large
ripe frog, squeeze it [one of the squishy noises is heard as she
makes this motion, giving away what the noise is] --

Edmund: [putting up a hand] Yes, yes, all right. [several words are covered
entirely by laughter (anyone out there have a closed-caption decoder,
since the commercial-release tapes are closed-captioned?).]

[Edmund goes to the door to leave, just as a Frenchman enters.]

Frenchman: [bowing] Ah, bonjour, monsieur!

Edmund: Sod off.

[Scene changes to Edmund's quarters, below the prince's house.
Baldrick is tearing apart some dough. Edmund enters, picks up
a tabby cat and punts it high into the air across the room.]

Baldrick: Oh, Sir! Poor little Mildred the cat! What's he ever done to you?

Edmund: It is the way of the world, Baldrick -- the abused always kick
downwards. I am annoyed, and so I kick the cat... the cat
[there is a mouse `eek!' noise] pounces on the mouse, and, finally,
the mouse--

Baldrick: [startled, jumps] Agh!

Edmund: ...bites you on the behind.

Baldrick: Well, what do I do?

Edmund: Nothing. You are last in God's great chain, Baldrick -- unless,
of course, there's an earwig around here that you'd like to
victimise.