Find out what's on TV this week.

On Dec. 12: The Great Christmas Light Fight

• What to watch on Mon. Dec. 12
• What to watch on Tue. Dec. 13
• What to watch on Wed. Dec. 14
• What to watch on Thu. Dec. 15
• What to watch on Fri. Dec. 16
• What to watch on Sat. Dec. 17
• What to watch on Sun. Dec. 18