Ken Jennings, Day 39

Jeopardy is showing new episodes again, and Ken Jennings has won show number 39 in a row. My favorite among some KenJen statistics: The last time that Final Jeopardy was mathematically necessary (i.e. the last time Ken did not have more than double the score of the next-best contestant) was June 29.

Update, 09-08: Huge KenJen spoiler.