These are videos which look good for presentations in my classes. Some are free and linked online, some are free on YouTube, some are linked to where they can be bought...
Free Online PBS full library (Nova, Nature... more)
PBS: "To Catch A Comet" - the Rosetta Mission (55min)
PBS: "The Big Bang Machine - Quest to find the Higgs Boson" (53 min)
PBS: "Alien Planets Revealed - the Kepler Mission" (53 min)
PBS: "Asteroid - Doomsday or Payday?" (53 min)
PBS: "Meteor Strike - Siberian Impact 2013 (52 min)
Nova: "The Earth from Space" - Satellites new data (53 min)
Nova: "Secrets of the Sun" (53 min)
The Fabric of the Cosmos page of several videos, including...
Nova: "Fabric of the Cosmos: Universe or Multiverse?" (53 min) with Brian Green
Nova: "Fabric of the Cosmos: Quantum Leap" (53 min) with Brian Green