NASA’s Spitzer Science Center sponsors (say that out loud) a series of hilarious educational videos that can be found in iTunes, YouTube or the itself. Here’s the latest episode, with some cameos by some sci-fi celebs you may recognize:

Ever wonder where dreams come from? This atmospheric indie film seeks out the voices that whisper our thoughts to us at night…

Blur Studio’s Rockfish is a cool animated scifi short that will keep you on the edge of your seat. Originally hosted by Atom Films, there is also the inevitable YouTube version…

This is an effective little Sci-Fi short about a scientist whose experiment goes awry…

This is a short clip from an old sci-fi jewel, Disney’s educational Mars and Beyond. The documentary includes a spoof of fifties sci-fi flicks which you retro-rocketeers will enjoy: