SPOILER ALERT!!! The plastic went flying on last night's Celebrity Apprentice. Finally, watching hours upon hours of this ridiculousness paid off. It all started in the boardroom when Melissa Rivers accused fellow plastic-face Brande Roderick and "pokah playa" Annie Duke of joining forces just so they could take her down. Donald Trump didn't buy the whines and he fired Melissa. Since Melissa and Joan Rivers' facelift scars are sewn