What lines from stuff spring into your collective heads at weird times
I tend to get lines from Blackadder and similar, my favourite being:

"Drugged, by God"
"No, by Baldrick actually, but the effect is much the same"
( Festivipros looks like he stands on kids' toys, Thu 28 May 2009, 15:39, Reply)

Firefly quotes tend to popup
Chiefly, "This food is problematic"
(Potty Jag har smör i min rumpspringa, Thu 28 May 2009, 15:42, Reply)

MONTY YOU TERRIBLE CUNT

( Mary's sexbox explosion makes me The Jesus, Thu 28 May 2009, 15:44, Reply)

ah withnail
the source of at least half of the things I say

I feel like a pig has shat in my head....
( Festivipros looks like he stands on kids' toys, Thu 28 May 2009, 15:49, Reply)

It won't GORE you
/ac
(\/\/0R/\/\\/L\/S Handsome, gay, pædo, King of France, AIDS, Hitler, Thu 28 May 2009, 15:52, Reply)

I have a bastard behind the eyes

( Labia Majora when you're feeling down, I'll feel you up, Thu 28 May 2009, 15:53, Reply)

My heart's beating like a fucked clock!
.
(DrTugnutcracker Smells like God's Vagina.., Thu 28 May 2009, 16:11, Reply)

you will have seen this, I'm sure


IthankyouXKCD
( Lampito asleep in the poppies, Thu 28 May 2009, 15:59, Reply)

http://en.wikiquote.org/wiki/Blackadder
Blackadder: That is for Ken Branagh's endless, uncut, four-hour version of Hamlet!

Shakespeare: Who's Ken Branagh?

Blackadder: I'll tell him you said that. And I think he'll be very hurt.
(Eds Meds Mathskillz=1,Socialskillz=0, Thu 28 May 2009, 15:50, Reply)

From Goodbyeeeeeeeeeee
Blackadder: You see, Baldrick, in order to prevent a war in Europe, two super blocs developed: us, the French and the Russians on one side; and the Germans and Austro-Hungary on the other. The idea was to have two vast, opposing armies, each acting as the other's deterrent. That way, there could never be a war.
Baldrick: Except, well, this is sort of a war, isn't it?
Blackadder: That's right. There was one tiny flaw in the plan.
George: Oh, what was that?
Blackadder: It was bollocks.
(Eds Meds Mathskillz=1,Socialskillz=0, Thu 28 May 2009, 15:53, Reply)

Baldrick what would you do if you had a million pounds?
Buy a nice big turnip in the country
( The Grammar Badger loves her new car even more than she loves cheese, Thu 28 May 2009, 16:00, Reply)

Words in other languages.
Like the morning I woke up and asked the first person I saw what tabula rasa meant, and asked why it was in my head.

That New Years' was a BAD NIGHT.
( Lampito asleep in the poppies, Thu 28 May 2009, 16:00, Reply)

Good question...
...I tend to get 'gusty, gusty, gusty-o-win-d-f-lap' in my head from the first Bottom Live... and also random stuff from Eddie Izzard and Bill Bailey... mainly Eddie though... 'For god sake Alcatraz, prisoners coming, co-ming, now, pris-oners'... stuff like that! :)
(Flim-Flam the Magnificent So my choice is 'Or Death?', Thu 28 May 2009, 16:01, Reply)

Eddie Izzard yes!
'It wasn't me - I was on the moon..... with Steve'

'round our way it's a standard response to any accusation .
(DrTugnutcracker Smells like God's Vagina.., Thu 28 May 2009, 16:06, Reply)

Hehe...
...me and my sister still say that if we get the blame for anything... along with 'Hello we're murderers... erm... twix please'.
(Flim-Flam the Magnificent So my choice is 'Or Death?', Thu 28 May 2009, 16:09, Reply)

Oh and...
'Death - or cake?'
(DrTugnutcracker Smells like God's Vagina.., Thu 28 May 2009, 16:15, Reply)

it's not a pe-ah-no
it's a claar-in-aaart
( Festivipros looks like he stands on kids' toys, Thu 28 May 2009, 16:16, Reply)

JAMIE! JAMIE!
JAMIE AND HIS MAGIC TORCH!
(Slip Digby is a meat puppet, Thu 28 May 2009, 16:03, Reply)

YOU
BASTARD... I finally got that out of my head about two hours ago - your utter arse!
(Flim-Flam the Magnificent So my choice is 'Or Death?', Thu 28 May 2009, 16:04, Reply)

the use of the name Bill
has reminded me that for some reason, every now and then I will bellow "JOJOBA!" in a Billy Connelly voice.

I'm not entirely sure why
( Festivipros looks like he stands on kids' toys, Thu 28 May 2009, 16:06, Reply)

jojoba?
"whit the f**k is jojoba?"
(Eds Meds Mathskillz=1,Socialskillz=0, Thu 28 May 2009, 16:06, Reply)

you may be quoting something but:
lmgtfy.com/?q=jojoba&l=1
( Festivipros looks like he stands on kids' toys, Thu 28 May 2009, 16:18, Reply)

I see your point.

Why, are my flies undone? Oh, I see your point.

Why, are my flies undone?...
(wellgroomedwookiee you are our second favourite food, OTHER THAN WOOD, Thu 28 May 2009, 16:06, Reply)

Oh, I see your point.

(Slip Digby is a meat puppet, Thu 28 May 2009, 16:08, Reply)

See also:
"Your bishop is exposed."
(wellgroomedwookiee you are our second favourite food, OTHER THAN WOOD, Thu 28 May 2009, 16:11, Reply)

You are pointless

(clendrix, Thu 28 May 2009, 16:15, Reply)

Oh hello.
How lovely to see you.
(wellgroomedwookiee you are our second favourite food, OTHER THAN WOOD, Thu 28 May 2009, 16:15, Reply)

Like...
...a broken pencil.
(DrTugnutcracker Smells like God's Vagina.., Thu 28 May 2009, 16:16, Reply)

fucking love that
haven't seen it in years
( Festivipros looks like he stands on kids' toys, Thu 28 May 2009, 16:17, Reply)

"Everybody knows that if a Vagina could speak
it would sound exactly like Enya."
(Slip Digby is a meat puppet, Thu 28 May 2009, 16:09, Reply)

On any hot day...
'I gotta change my shirt, it's sticking to me. I'm sweating like a cunt.'
(DrTugnutcracker Smells like God's Vagina.., Thu 28 May 2009, 16:10, Reply)

GREASE 2
The bit at the end where the bloke takes of his helmet and the girl screams

"MICHAEL, ITS MIICCCCCHHHAAAAAEEEELLLLLL!!!"

I fuckin love it
(Spikey halls and boughs of Pickle fa la la la la, la, la, la laaaaa wishes he was mabazaritchie, Thu 28 May 2009, 16:20, Reply)

"I lost the game"
Heard that earlier.
(Ethelred likes his own webhosting services, do you?, Thu 28 May 2009, 16:20, Reply)

My user name is a personal favorite...
Most of what I say has been lifted from one comedy or another, mostly South Park, The Simpsons or Mighty Boosh

"Ill be all over you like a powerful moss"

"The problems communication... too much communication" - I love Homer
(Is this a good idea? ... Yes this is definitely a good idea, Thu 28 May 2009, 16:50, Reply)