My favorite version is, of course, the classic one with Colin Firth:)
The Kiera Knightley one isn't too bad, but I think the problem is that it misses the humor in the story. I'm not really laughing in that film, and laughing is a big part of the Pride and Prejudice experience for me.
I'm also deeply in love with an old black and white version of P & P featuring Laurence Olivier.
It has a wonderful, elegant, old Hollywood charm to it. Check it out, you won't regret it:)
And to add a fun twist, this is a great adaptation of the story set in India:
I love Indian movies and I obviously love Jane Austen, so when my friend Kathleen saw a trailer for this film, she said "it's like someone went in your head and made a movie!" So true. The Bollywood feel can be a little much if you're not used to it (think 400 people in matching outfits suddenly breaking into song and dance in the middle of a supermarket scene), but the story is wonderful and translates well!
So there you have it--some gut-spilling from a Pride & Prejudice fanatic.
Are YOU a Jane Austen fan, too? Come on, don't be shy!