As Country Mouse said last night as we left the theatre, "I don't know if it was meant to be one, but that was the best black comedy I've seen for a long time."
Perhaps it is meant to be a drama and we were meant to take it seriously. But I had much more fun with Notes on a Scandal when I realized quite quickly that the whole film was camper than a row of tents. In more than one scene it reminded me of The Killing of Sister George or Whatever Happened to Baby Jane? Whatever the intentions of the director and the screenwriter, Judy Dench was intent on having a rip-roaring time playing a "villain" so arch I expected the film to end with her wrestling Adam West and Burt Ward over a vat of fluorescent green chemicals.
I'm not going to review the film in its entirety (Listmaker does a good job of that here). Instead I want to note that if I am to ever be reincarnated as a bitter and twisted psychotic middle aged woman I want to come back as Judy Dench in an endless loop of the 10 second shot in which she drives maniacally through a wet London night with her face resembling an electrocuted carp and Philip Glass strings booming urgently in the background, all the while being filmed from a slight angle.