It's a week of sequels, with a followup to a cult sci-fi film, a comedy and a children's classic. At the top of the list is 'TRON: Legacy,' the much-waited-for sequel to 1982's 'TRON,' about a computer jockey who is sucked into the digital world of The Grid; the sequel has the son of the computer whiz going down the rabbit hole after his dad. 'Little Fockers' is the second sequel to 'Meet the Parents,' and it's a lackluster return to the same skits that permeated the original and the second sequel. Lastly there's 'The Chronicles of Narnia: The Voyage of the Dawn Treader,' the third entry in the big-screen adaptation of C.S. Lewis' fantasy-adventure series. Read on.