Serenity
Lisa's already said her comments on Serenity. I'm saving mine for Wednesday's update at What I Saw Today... as it's more of an essay.
In short: I loved it, and felt betrayed by it at the same time. I'm not anywhere near as upset as Lisa, because we look at things in a different fashion, but I am annoyed.
It's also clear to me that there will never, NEVER be a sequel, no matter how well this one does. The...events that occurred never occur until the very last installment of a series. It's over. Enjoy it while it's there, Browncoats.