I just watched it and to be honest I have mixed feelings about it.
I think I can identify a bit with the female character, especially in not being able to hide one's enthusiasm or censor what's coming out of one's mouth, being too literal and all. I also had a good laugh at that scene in the zoo- that's what I'd do as well, just not in front of a bunch of people.
I can't really identify much with Hartnett's character, although I think he played it pretty well. when I was a kid I used to do a slightly similar thing as he did with numbers ("the numbers on this numberplate all add up to a prime number so it's going to be a good day" kinda thing) but I've never been much of a maths person. I also don't think I would just talk to random strangers like he did, although the faux pas with asking the homeless guy for his social security number sounds like something my style
there were a few inconsistencies I think, like when the girl was being considerate and helpful to the group and telling them that she's happy to see them and all... I don't know, it just seemed so strange that she had this kind of people instinct, I don't think something like that would ever occur to me (not to mention cleaning someone elses bathroom ;p).
also, she's supposed to hate the sound of metal on metal, yet she works as a hairdresser. I don't know, but I've always found the sound of scissors pretty icky, especially when they work really fast and make that prickly sound... I don't hate it to a point of freaking out right then and there but I definately dislike it...
ok had to point the inconsistencies out, feel so much better now lol
all in all I liked it though, especially the visual side, but the plot wasn't too bad either. I have the same problems with relationship pressure and such stuff in general as the girl from the film so it made me feel like maybe those difficulties might be overcome one day.
I'd give it a 7 out of 10.
_________________
not a bug - a feature.