I really don't get what the idea behind this movie is supposed to be. Its not really funny or a spoof as one might expect. Basically what you get is a homage to 50ies/60ies alien movies with all clichés I could think of. You got the flying saucer, you got the diner, you got the kids going out into the desert looking for the saucer, you got a cranky cop, a scientist, a heroine waitress and an alien changing into human form as well as another one reducing people into puddles. The whole thing has a pretty trashy look and the alien looks pretty ridiculous. Throw in a ridiculous love story and off you go... So what you get is the viewing experience of a dated alien movie with no new ideas whatsoever presented in modern Technicolor (the whole thing is flashy and over saturated). If "Alien trespass" was supposed to be funny I didn't get the joke unless its funny to remake a 60ies movie without adding anything new to it except for higher production values. Avoid unless you are into trashy 60ies Sci-Fi movies.
Review of Alien Trespass
