Hollywood stars, they're just like us. Work drama can't always be left at the office, and it sometimes turns ugly when it comes home. Some long-running feuds between entertainment industry giants have ebbed and flowed and grown into larger-than-life tales.Tim Allen is the latest star to be caught in a public feud after his "The Santa Clauses" co-star, Casey Wilson, accused him of "bad behavior" on the set of the film.