I caught this video last night from Metafilter. Watch, and see below for the discussion.
Some of the comments on Youtube are right on. The contestant who is in the lead going into “Final Jeopardy” will almost always bet $1 extra than the maximum sum his opponents can achieve. By betting on the fact that his opponents–who were already tied going into Final Jeopardy–would bet the maximum possible sum, Scott decided to match, thereby guaranteeing another round against those same opponents, over whom he displayed superiority. So next week, Scott faces the same players and will probaby secure at least one more handsome payday.