Oh Lordy! I don't think I will be able to watch the film of PoA, because I have had a crush on Remus since he was first introduced, and I have a nice picture in my head that I don't want to spoil! David Thewlis looks like a rat....
Anyway, yes I have always liked Remus Lupin because he's so calm and cool. I agree with pretty much everything good that has been said about him. He's such a nice guy basically! But like someone said, he manages to be nice without being boring. We know he's funny and cool as well, like I particularly loved the way he reacted when he saw the Marauder's Map again (and all that stuff about how an idiot like Snape ever became a professor!) and the way he talked about it to Harry, like when Harry asked "you know them?" and Remus was like "We've met". Also, one of the best parts of OotP, "one: he's sitting on my chair. two: he's wearing my clothes. three: his name's Remus Lupin".

He's intelligent and brave and has had to deal with so much loss and discrimination.
It was heartbreaking to read Lupin's reaction to Sirius's death, his voice cracking as he tried to tell Harry that Sirius couldn't come back!
I hope that he will be able to be close to Harry in the forthcoming books, and it would be nice if somehow Harry could see some more memories from James/Sirius/Remus's schooldays through Lupin's eyes, so that they would be happier ones than the one he saw of James bullying Snape. You could tell from the exam hall scene that they were funny and fun, and we know that they used to get into all sorts of mischief from the existence of the Marauder's Map (for a start).
Part of what I love about Remus is that he isn't hot-headed or bent on revenge or whatever, but I think he
should be able to confront and punish Pettigrew in the end. That little rat is responsible for the loss of Remus's best friends in the whole world!

(I love the 'scr*w you Pettigrew' slogan as well lol!). I don't know whether I want Remus to kill Peter, or whether I think he should get a kiss from a dementor - because like Dumbledore said, there are things worse than death (and Peter Pettigrew deserves the worst!). I think I would just die if Lupin was killed off! His death and Dumbledore's death would be the worst possible ones. I hope JK doesn't feel the need to carry on being a 'ruthless killer'!