Did I really see Chris Elliot at the end of this?

Yes. He was the sonar operator on the ship.

you blind? Chris Elliot's been in the whole movie since the very beginning of the movie. Pay attention next time

i almost think cameron digitally added chris into the final 5 minutes because it's like "poof" here's a comedian all of a sudden for no good reason, were we supposed to laugh?

I like Chris Elliot, but he was definitely out of his league acting in a serious sci-fi movie. His acting was just so bad at the end even with his tiny part.