...Trekkie phenomenon is a treat, with its story of the jaded cast of a short-lived cult sci-fi show (Tim Allen, Sigourney Weaver, Alan Rickman et al) being gently abducted by aliens who have mistaken the show for a documentary and now need the actors...premiere of Stab, a slasher movie based on the events in the first film, and includes, inevitably, an impromptu lecture from Randy (Jamie Kennedy) on movie sequels.By Karl French