Five Most Painful Losses?

According to the Dayton Daily News, the five most painful losses in baseball history are:

5. Giants fall to Cubs for NL pennant, 1908.

4. Yankees' Bucky Dent homers to beat Red Sox in one-game playoff in
1978.

3. Houston falls after 16 innings to NY Mets in 1986 NLCS.

2. Boston's Bob Stanley unloads a run-scoring wild pitch and Bill
Buckner boots a routine grounder as Red Sox lose to Mets in 1986
World Series.

1. Third game of a three-game NL pennant-deciding playoff in 1951. The
NY Giants trail the Brooklyn Dodgers 4-1 in the ninth inning of Game
3. After scoring, Bobby Thomson delivers the "Shot Heard 'Round the
World," a three-run homer that clinches the pennant.

Isn't it amazing the Mets were the winners of the two of the five most painful losses?

Personally, I think game 6 of the 1986 World Series might be the worst. I understand the whole Ralph Branca/Bobby Thompson thing, but that was to go to the World Series, not preventing the other from winning the World Series.

What are the five most painful losses to you? Leave your answers in out comments section.