I'd say I'm an 8/10. I love the film, the animation, the characters, the setting, the music... everything about it, really, and I know few movies where I can say that everything is perfect without exaggerating. TLK is perfect - it can't get better than it already is.
Then the sequel(s) can be discussed, but they aren't awful either (though TLK1?... *shiver*).

I think some of my friends/family find it weird that I still love that film so much, but I can't really help it xP TLK is what got me into drawing and animation in the first place, and it's helped me meet so many wonderful people. I'll be forever grateful to that movie xP It changed my life, it really did.