The December 2015 challenge has garnered 16 answers, with the top voted answer (with a score of 4) coming from Kovács Levente, which makes him the winner of this challenge and earns him a bounty of 100 additional reputation:

1. The Usual Suspects what's the joke?

The other answers in order of votes are:

2. (3+V) How exactly did Summers, Shelby, Abernathy organize their slavery empire?

3. (3) Is there a real life inspiration behind Dexter?

What does the painting in the hospital hall in Kill Bill mean?

4. (2+V) Where did Loco get the rifle from?

5. (2) What are we to make of the ending of The Great Silence?

Why not just make him forget again?

6. (1) Why the delay in Batman v Superman: Dawn of Justice

Who is Bruce and does he have a real-world counterpart?

Explanation for A Tale of Two Sisters?

What did Daniel Plainview whisper?

7. (0) What did Daniel Plainview whisper?

How did they realize the truth about Josh?

Why doesn't Alan Shore contest for partnership?

What is the meaning of the symbols on the Arrowhead in the season 3 intro?

8. (-1) Why exactly does the girl cry at the end?