I saw Doubt, I thought it was great!
This is a really good movie IMO. It takes no sides, and in the end, everyone wins.
Despite that, and myself being wholly intolerant of christians in general, I was very pleased. I have not seen or read the play, and thus I don't know what was said or implied in that, but the actors in this movie do so much with their expressions and their wording of sentences, that the dialogue is seriously shortened, but the ideas are conveyed possibly better than would be! If you are at least unaware of this movie I would suggest looking it up if not going to see it. I won't say what it's about, just in case, but I was very impressed by the accuracy in how the Catholic Church's method of dealing with itself was portrayed.
For the most part, the movie focuses on the back and forth of Meryl Streep's and Phillip Seymour Hoffman's characters, however, Sister James appears as the protagonist, unsure whether or not to believe Sister Aloisius (Streep) or Father Flynn (Hoffman). In the end, Aloisius pulls a trick and tells Flynn that she contacted a nun at one of his previous perishes, finding proof that he had been devious with boys in the past. Flynn, distraught, resigns his post and moves to a new parish. We find out that he has been allegedly promoted to a higher position at said parish and he has actually won out from the ordeal, but just before the movie ends, Aloisius reports that she never contacted the nun, and never had proof. Flynn's resignation confirms his deed with the boy, and Sister James finally believes that Flynn abused the boy.
That's how I interpreted the movie, but I did go with a diverse group of people, and while some of my friends were unsure of the outcome, a few of my Christian friends were dead set on believing the opposite.