-you-dig-it? spirit, derived from his affection for the mid-1970's cop show that inspired it and for the era itself. The original series featured a pair of apparently plainclothes cops ? who were they supposed to be fooling? ? played by Paul Michael Glaser and David Soul. Mr. Phillips may not quite be a filmmaker, but he's on his way to becoming a director; his grasp of tone is a few steps ahead of his previous film, "Old School." Starsky (Ben Stiller) is probably one of those rare ...