The fourth movie should not have seen the light of day.

Rating: Null/10 (21 March 1999)

They say that in space, no-one can hear you scream. I wonder if they can hear you snore! This was complete and utter pap from start to finish. Obviously weighed down by her huge paycheck (the only reason to appear surely), Sigourney Weaver lumbers around looking about as mean as a junkyard dog crossed with a squirrel.
If you are an Alien aficionado perhaps you might have had your kicks here but for the serious movie watcher this was yet another pitiful example of a sequel which should have been buried long ago.