Jan 6 - Following are the top 10 movies at North American box offices for the three-day weekend starting Jan 4, led by "Texas Chainsaw 3D" at No. 1, according to studio estimates compiled by Reuters. 1 (*) Texas Chainsaw 3-D.........................$23.0 million 2 (2) Django Unchained...........................$20.0 million 3 (1) The Hobbit: An Unexpected Jounrey..........$17.5 million 4 (3) Les Miserables.............................$16.1 million 5 (4) Parental Guidance.