is there a reason it's running so fast? it kinda reminds me of the silent movies where they used to turn their cameras 10 18 fps while filming to save on film, and then during playback (24 fps) everything would be faster...

edit: as far as crits go, i'd have to say that the lighting of the top of the ufo matches your video shots, but the underside (especially the feet when it lands) are way too dark/underexposed.