The incidental music when the team arrives on the Aurora directly emulates the music from the beginning of Ridley Scott's 'Alien', as the camera moves about the Nostromo prior to the crew awakening.
McKay calling the wraith "hot" is an in-joke as during filming with the female wraith, when not in full makeup she was unrecognisable and had a particular actor confused as to why this beautiful woman was talking to him.