It's a Jane Austen palooza! Whee!!!
The most well-known movie version of _Emma_ probably would be the one with Gwyneth Paltrow and Jeremy Northam (yum!). Gwynny keeps her English accent throughout the movie. A definite plus. She's rather petulant, though, and I don't know how well that matches the "real" Emma of the book. I'd have to re-view the movie and re-read the book to give a good assessment.
The other movie version I've seen is another A&E/BBC adaptation with Kate Beckinsale as Emma. I forget who plays Mr. Knightley in this one. I like Kate, and I liked her as Emma. But that's all I can remember about that movie.
I think there was yet another BBC version...made in the 80s or 90s, before the one with Kate. I didn't like it. It wasn't just the grainy-ness of the recording...it was too "Look at us doing a TV special" in tone. Too self-conscious of being a televised play. And it was not a play really, not in the vein of _Our Town_.
Not the most informative review, The Pink Kitty. Sorry! (Note to other readers: Pink Kitty---best friend from TN; The Pink Kitty---new blogger friend, from CA.)