I had vaguely heard of this but wasn’t really sure what it was. My daughter had a DVD of it, though, so we gave it a try and I’m glad we did. DR. HORRIBLE’S SING-ALONG BLOG originally appeared as a series of webcasts and has some top-flight talent behind it, including writer/director Joss Whedon. It’s a musical spoof of superheroes and supervillains, with an excellent cast headed by Neil Patrick Harris, Nathan Fillion, and Simon Helberg. The songs are catchy, the dialogue is funny, and the ending is surprisingly poignant. This is another movie with a niche audience. You’ll probably either think it’s great, like I did, or you’ll be utterly bored. But it’s short (less than an hour), so you won’t have to spend much time finding out. Recommended.