Top features of this film include : A levitating cow ; Bad attitude aliens that push innocent commuters off escalators and can get onto a tube train AFTER the doors have closed, Car chases where the oncoming traffic is the same 5 cars for nearly ten minutes ; A super-smug peace loving friendly Alien called Comdor ; Stunts from the cliche book of stunts ; Alien talk that sounds a lot like swear words. It sounds bad, but stangely it is more entertaining than many big budget films of the ilk. I think it is unintentional satire, if there is such a thing.