Apparently, I’m Ford Prefect. Or, as the test says:
I was afraid of this. I’m Arthur. Oh, the pain.
I’m Trillian - so I’m off to play with my own breasts whilst suing trillian.cc for stealing my trademark 
TTFN
JP
Trillian. Huh. That’s not what I was expecting.
Damn, I’m Trillian too. Well, at least she’s hot.
Dodged a bullet there, I turned out Ford. Was afraid I’d be Marvin…
More Trillian action!
I’m Ford. I more or less expected that.
Oddity, the quiz said that I was Zaphod. Now, I would have pegged myself as Marvin or Arthur, but Zaphod? Oh come on, I never outcooled anyone!
Well, perhaps its time to start…
Yet another Trillian. Are all we “Trillia” so far of the male persuasion? (And what, if anything, does that mean?)
BAH! I am Arthur - obviously had a sex change somewhere along the line. How odd, though, I did not respond positively to the “tea” questions.
HUH!
I am Trillian… all this time I had the wrong nick picked out…
But, I don’t give this quiz too much credit
Um, no! It was used to calculate the Question. Sheesh. Deep Thought had the Answer long before.
Hey, I’m Trillian too.
*You’re Trillian! Ah, you’re probably the intelligent one who prefers being scientific, just because it sounds nice. You might hang in the shadows a little bit as a secretary, but this universe has big plans for you. If you keep an outgoing personality and overcome shyness, you could be quite powerful. *
Wish there were some more questions, or a more specific answer. I’d say I’ve got more in common with Ford - taking a demented perspective on life and weirding the living hell out of people is just my thing. I can be pretty lazy, too - heck, I’ve got a lot of good points. 
Shyness isn’t a problem - although I’ll agree with the test 100% about my intelligence.
Great. I’m Marvin!
Catch me at another part of the trade show season and that may change.
Trillian here.
Funny, I would have pegged myself as Slartibartfest. But I suppose that Trillian isn’t too bad. I’ll just go stand in line with the rest of the transsexuals, here.
Zaphod apparently. I always figured myself for more of a Ford.
Of course everyone thinks they’re Ford. No one thinks they are Arthur or Marvin.
Zaphod’s unite!
You’re Zaphod! When it comes to knowing yourself, you have this funny little feeling you’re missing something, but that doesn’t bother you. You enjoy being in the limelight, and when someone pushes you out, you get mad. Hey, we all know you’re insecure, but swallow your ego and you’ll be a lot more enjoyable to be around.
Now where’s my Pan Galactic Gargle Blaster?