Most analysts agree that the Thanksgiving weekend could produce one of thebiggest windfalls in history for the studios and theaters. Last weekend'swinner, Twilight , is generally expected to remain at the topwith about $25-35 million for the Friday-Sunday period, a drop of more thanhalf from its opening weekend. But the Summit Entertainment phenomenon isexpected to face a stiff challenge from the New Line/Warner Bros. romanticcomedy Four Christmases. Disney's Bolt , which disappointedlast weekend, could scamper back into the race with kids out of school forthe holiday. The 20th Century Fox epic Australia is also expected torank among the contenders. And there's also the latest James Bond thrillerto reckon with as well as the third go-round in the Transporter series. In limited release, Focus Features Milk with Sean Penn isexpected to pack the 35 theaters where it will be opening.