Notice how he rarely speaks about his own feelings and accomplishments, but instead focuses on the roles played by everyone else. Not only does this show tremendous moral character, but it is a much more compelling and exciting speaking style.
From the Green Room: As much as possible, substitute "you" for "I."
For example, try to avoid beginning a speech by saying something like "I'm honored to be here." Instead, begin with a "you" statement: "Each one of you made this day possible."