400 Years of the Telescope is a documentary that came out in light of the celebration of the International Year of Astronomy. The movie portrays the evolution of the telescope - from Galileo's observations to the Hubble telescope and new multi-mirror telescopes projects in progress - and also tells how our perception of the universe and the sky changed over time.
I truly enjoyed watching the DVD. Besides an educational value, this movie shows some of the most remarkable images taken here, on Earth, and remotely.