If you're late to Twitter, then this video creatively explains what the recent buzz is all about. In a quick two minutes, you'll figure out the general idea behind Twitter and how to use it. And once you do, you can start to follow our Twitter stream right here. We also have a list of other cultural organizations on Twitter here. Worth a look perhaps.
The producer of this video, CommonCraft, hosts other videos along these lines on YouTube. Here are the most popular ones.