In a stunning upset, horror-fest "Texas Chainsaw 3-D" sliced and diced its way to No. 1 in this week's box office, raking in $23.3 million in its debut week.

"Django Unchained" finished in second place with $20 million, and last week's No. 1, "The Hobbit", rounded out the top three with $17.5 million.

The top ten:

"Texas Chainsaw," $23.3M
"Django Unchained," $20M
"The Hobbit: An Unexpected Journey," $17.5M
"Les Miserables," $16.1M
"Parental Guidance," $10.1M
"Jack Reacher," $9.3M
"This is 40," $8.5M
"Lincoln," $5.2M
"The Guilt Trip," $4.5M
"Promised Land," $4.3M