content: This sounds like it might be goofy, but actually it takes some guts to frame real science around this concept. But...they do, and it works. The visionary science of Star Trek that is now every day reality (and some that may be future reality) is presented by genuine scientists and, with their help and William Shatner's humor and enthusiasm as host, creates that rare dvd that teaches while it seems to be just entertaining.Good for the classroom, but that's not even its intended audience. It's really for all of us--anyone who appreciates science and wants to know more, and anyone who likes to be inspired by the discoveries and inventions that have changed our world. (Oh, and it doesn't hurt if, like me, you're a fan of "Star Trek", but...even if not...if you fit the description above, I guarantee, you'll still like this dvd.)5 Stars.