Believe it or not, I lay awake some nights just thinking
about such things. I am a lover of the series as a whole, admitting of course that there are highs and lows as there are bound to be in any long creative endeavor.
The first in the series was fairly clean of any glaring errors that I could note. Allowing Kane back on the ship with the Facehugger on him was sorta stupid, but had it not happened there would be no story so we must let it slide.
For Aliens, I can say that I think that Ripley was just a bit naive it accepting Burke's assurances but again,...