Now they get to face the Detroit Tigers for the championship. On paper, the Tigers look like the better team by a wide margin. But the Giants seem to defy odds, so it should be an interesting series.
Added: Some baseball history that I wasn't aware of:
Sean Kirst notes that this is the first time the Giants and Tigers have met in the World Series, despite their status as ancient teams. These two teams had plenty of success, the Tigers appearing in ten World Series prior to 2012, the Giants in sixteen (modern era). The teams tended to just miss each other. For example, the Giants were in the series in 1905, then from 1911-1913. The Tigers played in three straight from 1907-1909. The the Tigers went back-to-back in 1934 and 1935, while the Giants played in 1933, 1936, and 1937.Another example of the beauty of the game; even with over 130 years of history, something totally new can happen.