by Jean Sramek October 18, 2004 Rob Reiner�s cult-classic mockumentary includes a scene with the fictional band�s lead guitarist, Nigel Tufnel. The interviewer asks Nigel what he would do for a living if he weren�t a rock musician. Nigel, played by the wonderfully deadpan Christopher Guest, chews his gum thoughtfully and answers, �Well, I suppose I could work in a shop of some kind �maybe in a…