10 Things You Learn Re-Watching Alien
3. Ash Calls The Xenomorph "Kane's Son"
It's incredible how you can see a movie numerous times and uncover fascinating new things, so don't feel too bad if you missed out on Ash referring to the Xenomorph as "Kane's son" moments after Brett is killed.
It's interesting because it not only underlines Ash's robotic lack of sensitivity but also his heightened knowledge of the situation.
You can find pre-DVD message boards of people trying to figure out what Ash was actually saying here, and most people sided with "And then some" or "Gained some" in response to Parker (Yaphet Kotto) talking about the Xenomorph's size.
If you're one to watch movies with the subtitles on to catch every last morsel of dialogue, you might've been surprised the first time you saw this.