Billy Connolly says that while filming the sex scene with Melanie (Julie Graham), the director urged him (and Julie) to be more enthusiastic, vocal and vulgar. Billy said that he's not like that in real-life. Just "mildly grateful" that he's having sex.
Billy Connolly said that he had been waiting for a good reason to finally shave off his famous goatee beard but never had one, until director, David Leland asked him to do it for this film. After doing so, he remarked that when he saw himself in the mirror, "he looked like a potato"!