I think I might of finally thought of one (I'm slow and don't watch that much media), though not from a movie... Does anyone watch How I Met Your Mother? I'm thinking Ted's probably an ENFx and Robin is an NT? (but maybe STP, which would render this useless.)
Ted's always idealizing what he wants out of soulmate- and the fact that there *is* one out there for him. Whereas Robin was always more against the super-sharing of everything and wanted to be more independent.
(Off-topic, but an interesting show to think of in MBTI. What's Barney's type? Disappointed ENFP? ESTP persona?)
(Continues wandering off topic...)
I've just been watching that show today... I'm almost certain Ted's an IFJ of some sort. He gets totally freaked out by all of Barney's spontaneous plans, is quite happy going to the same bar and having a quiet drink with his same group of friends most evenings. And can't wait to fall in love and get married.

The only one I really can't decide on is S/N, but I would lean towards N due to his idealism...
And Robin... hmm. She's hard to pick, just about the only thing I can really see clearly in her is T. Maybe N, but does she really fit any of the NT types? ENTP, maybe. Otherwise xSTP, but seeing as I know none of them IRL I find them very difficult to pick out.
And then you get ENTP + INFJ which is a very good match indeed...
Barney... well he used to be very much an idealist (Peace Corps, etc, etc), is almost certainly an extravert and is very much percieving. So I'd say an ENFP who's lost touch with his ideals... I can see ESTP for his current persona, but it doesn't mesh at all with his 'old self', I don't think...
How about Marshall and Lily? He seems like an STP? And she's some sort of SFP, I think.
Thoughts?