It was a box of chocolates. "The Franchise: A Season with the San Francisco Giants " kicked off Wednesday nighton Showtime. There will be five more hourlong episodes, so maybethe meat and potatoes are on the way. The first installment wasn't deep, there were no shocks orsurprises, but maybe that's going to be part of the charm of theseries. Every other TV reality series strives mightily for theshock and the cheap and unreal dramatics.