Los Angeles Lakers began their NBA Finals preparation by sharpening their memories with a film session to review how they fared against the Boston Celtics when they split two regular season meetings with them this year The Celtics game tape that is unforgettable for Lakers fans, however, is from June 17, 2008, when Boston beat L.A. by 39 points to capture the championship. The Lakers have been reluctant to put too much emphasis on any motivation they might generate from that memory, but recognize the strides they have made as a team in the two seasons since then.<A This is a team that's a little experienced now, we've won a championship, we have a little more under our belt as a basketball club," Lakers coach Phil Jackson said. "I think we were a little green when we came into the playoffs in 2008. As a team we played with Pau [Gasol] for 30-some games, part of a season. We lost Drew [Andrew Bynum] for the rest of the season. We were young in a lot of other spots. This team is mature now, experienced