I normally wouldn't repeat something I've seen cross-posted like 8 times, but:
Dr. Horrible's Sing-A-Long Blog released Act III today. On Sunday at midnight,
it will no longer be available for free, after which it will be available on DVD and iTunes.
If you've watched the first two acts and enjoyed them, please watch the third while it's available so you don't have to give Joss Whedon any money to do it.
If you saw through the cute tunes and jokes and knew EXACTLY WHAT WAS GOING TO HAPPEN IN THE END, good for you. You're familiar with the dynamics of Joss Whedon and every other abusive relationship you might otherwise enter into in the future.
Seriously, I wish everyone would stop idolizing him for pulling the same damn strings he pulls in every plot he gets his hands on.