Toughest questions this week

As I stated before, I think the impossible rounds were exceptionally impossible this week, and the wild cards were no walk in the park either. Here are the questions I think were the toughest this past week, with answers after the jump:

1. What is the biggest beer drinking day in the United States?
2. What does the sun of the door of an outhouse indicate?
3. Released w/in the last 3 years, this was the most expensive film to produce ever, costing over $258 million.
4. If I were referring to waxing gibbous, what would I be talking about?
5. In the 1970s, Congressman Leo Ryan was murdered at an airstrip while investigating what?
6. What classic book begins with the line, "In my younger and more vulnerable years my father gave me some advice I have been turning over in my mind ever since?
7. This 17th century British philosopher believed that all ideas come from experience and none are innate.
8. Modern historians do not believe that this philosopher wrote anything that has survived, but for over 2,000 years the 5 Classics were believed to have been written by this man.
9. When Dan Marino and Joe Montana met in the Super Bowl, it took place on this college's football field, west of the Mississippi River.
10. William Daniels provided the voice for this object from 1982-1986.