PAGING SAMMY JO...: ABC has greenlit a two-hour telepic that will chart the behind-the-scenes rise and fall of the classic '80s sudser Dynasty. But the network insists the project � slated to air during May sweeps � will not be a juicy tell-all like last season's Three's Company dishfest. "We realized we can't do that; it's been done," ABC longform VP Quinn Taylor tells Variety, noting that there wasn't much friction on the set, anyway. "Linda Evans was baking cookies for the cast." The fact that they were laced with Liquid Drano and all intended for Joan Collins is neither here nor there.