In the extra materials on the Trainspotting DVD, there is a replay of the movie with the actors overdubbed commenting about each scene, saying what they remembered about it. One of the scenes has a girlfriend pull the sheets off of Ewen Bremner's character when he's passed out naked in her bed, saying "Let's see what I'm missing. Eh, not much..." Ewan McGregor's commentary over that part was amusing, pointing out that her comment in reality would make no sense, given that Bremner's actually quite well endowed, clearly shown in the shot...