We don't mean to be morbid, but all of us are going to move on to the hereafter eventually. But after an eventful and full life, how will you be remembered? Leaving your personal history behind when you die is one way. Maybe you're one of those people who loves to listen to your grandmother tell what it was like in "the old country" (or before there were computers), and you swear that one of these days you're going to write it down. How about videotaping it? At ARC Video Productions, Penny Cohen and her brother, Steve Almes, will do it for you. Their legacy-video concept evolved from their own loss -- the death of their father. As an offshoot of their corporate marketing and training videos business, they decided to produce legacy videos -- people's life stories that they could pass on to future generations. Cohen and Almes tape the up-to-two-hour video in the customer's home or in the living room set at their video studio. They have a list of questions that they -- or a member of the family -- can ask the interviewee, or the interviewee can talk extemporaneously. Or it can be a little of both.