A short hijack…but hey, I started the thread 
Does anyone know the name of the triple-breasted whore of Eroticon 6? For the life of me I can’t remember and a friend of mine is in search of a new MSN screen name…
Eccentrica Gallumbits?
Eccentrica Gallumbits.
I never get in under the buzzer!
Yeah, I remembered what it was as I waited for the bloody page to load…
mumbles something explicitly obscene regarding Frank’s internet connection and the cheap, money-grubbing nature of the ^%&%$@ phone company that won’t install current technology…realizes this belongs in the pit and stops ranting…
This used to be my sig:
“Bloody apathetic planet, I’ve no sympathy at all”
This whole bit is great, but a little long, so I’ll only post my favorite part:
4.POPULATION: None… It is known that there are an infinite number of worlds, simply because there is an infinite amount of space for them to be in. However, not every one of them is inhabited. Any finite number divided by infinity is as near nothing as makes no odds, so the average population of all the planets in the Universe can be said to be zero. From this it follows that the population of the whole Universe is also zero, and that any people you may meet from time to time are merely products of a deranged imagination.
…2000 years after a man was hung from a tree for saying how good it would be if everyone were nice to each other for a change…
oh and one that I actually do use in conversation (granted normally as a non-sequitor):
“Ford, your turning into a penguin! Stop it!”
42
As a science type person, I always liked this one:
“A scientist must also be absolutely like a child. If he sees a thing, he must say that he sees it, whether it was what he thought he was going to see or not. See first, think later, then test. But always see first. Otherwise you will only see what you were expecting. Most scientists forget that."
Also: “You can’t possibly be a scientist if you mind people thinking that you’re a fool."
I want to incorporate one or both into my thesis somehow, when I finally get to doing finishing touches, like nice little quotes and dedications and acknowledgments and such.
Some of my favorites…
…
“It’s not so much an afterlife,” said Arthur, “more a sort of après vie.”
…
“Five hundred and seventy-six thousand million, three thousand five hundred and seventy-nine years,” said Marvin. “I counted them.”
“Well, here we are now,” said Trillian, feeling — quite correctly in Marvin’s view — that it was a slightly foolish thing to say.
“The first ten million years were the worst,” said Marvin, “and the second ten million years, they were the worst too. This third ten million I didn’t enjoy at all. After that I went into a bit of a decline.”
…
“It’s the wild color scheme that freaks me,” said Zaphod whose love affair with this ship had lasted almost three minutes into the flight. “Every time you try to operate one of these weird balck controls that are labeled in black on a black background, a little black light lights up black to let you know you’ve done it. What is this? Some kind of galactic hyperhearse?”
…
The alien creature frowned briefly and consulted what appeared to be some species of clipboard that it was holding in its thin and spindly alien hand.
“Arthur Dent?” it said.
Arthur nodded helplessly.
“Arthur Philip Dent?” pursued the alien in a kind of efficient way.
“Er…er…yes…er…er,” confirmed Arthur.
“You’re a jerk,” repeated the alien, “a complete kneebiter.”
Welcome to the boards, ** solasscc**, the bathroom’s over there, the kitchen’s over there, and the raving lunatic’s over there.
Space-time isn’t just curved…it’s downright BENT!
I always kinda liked,
“Ford, you’re turning into a penguin. Stop it.”
Zaphod on his trip to the frog star having just used the body-debit card to escape (he thinks) and battled though the disco-from-hell (‘they’re passing out, spray them with adrenaline’)
You came down the stairs? From Ursa Minor?
Hey man you must be incredibly fit.
Zaphod’s request to see Zarniwoop…
He’s to cool to see you now. 
And everything everyone else has posted. The BBC recently did a HHG ‘tribute’ as part of the Big read season (Patrick Moore was the book). Amongst other scenes they did, they did the whole Deep Thought - Vroomfondle - Magikthise sequence and I was LOL even though I know every line
From The Private Life of Genghis Khan
A great short story. If you don’t know it check it out.
.
Since I am an economist, I’ve always gotten a chuckle from this:
Arthur awoke to the sound of argument and went to the bridge. Ford was waving his arms about. “You’re crazy Zaphod,” he was saying, “Magrathea is a myth a fairy story, it’s what parents tell their kids about at night if they want them to grow up to be economists, it’s…”
“No, Zaphod Beeblebrox over here! […]Any one’s friend in particular, or just generally well disposed towards people?”
“Look at the people, and the other people…”
There are too many to choose from.
Despite my signature, my absolute favorite Adams quote has to be this:
“Arthur felt happy. He was pleased that for once the day was going so well according to plan. Only twenty minutes ago he had decided he would go mad, and now here he was, chasing a Chesterfield sofa across the plains of prehistoric England.”
It’s just so irresistibly surreal, it makes me giggle every time.