This week, I’ll be reviewing “Young Victoria,” with Emily Blunt as the teenager whose reign as queen of England defined an era. It is produced by Sarah Ferguson, former daughter-in-law of Queen Victoria’s great-great-great-granddaughter, Queen Elizabeth II. And there’s also the romantic comedy about an estranged couple who are stuck with each other in the witness protection program, “Did You Hear About the Morgans?” with Hugh Grant and Sarah Jessica Parker. But the big news this week is “Avatar,” now officially the most expensive film of all time, from James Cameron, whose last record-breaking budget led to record-smashing box office returns: “Titanic.” “Avatar” is a 3D animated story about a world of 10-ft blue creatures with tails and the humans who interact with them via computer-generated substitutes. That review will be up late Friday; the others on Thursday night.