Yes, I wrote a hub about it. I believe it was born from early novels like The Time Machine and 20,000 Leagues Under the Sea. It revolves around Victorian themes and advanced technology using steam power. Wild Wild West was a steampunk movie, though I can't think of any other movies off the top of my head, and there are a handful of video games that use the genre. If you haven't checked it out yet, I highly recommend it, especially to fans of Science Fiction and Fantasy.