On Friday I saw The Social Network. What a pleasure to see a movie that's really written. Aaron Sorkin's lines crackle with energy all the way through. All the acting performances are excellent, and the structure, hopping between the events themselves and the depositions in the legal action years later, works beautifully.
My only criticism has to do with the limits of aging ears: the setting of a couple of crucial conversations (including the very first one) against a realistically noisy background of bar conversation. It was hard work to filter the (realistic) distractions away, and I didn't want to miss a line.