
As interpreted by the guys at First Read. I can't think of any to add.
1. Obama's race speech in Philly (2008)
3. Al Gore's concession (2000)
4. Obama's keynote at the 2004 Dem convention (2004)
5. Bush's "Mushroom Cloud" (2002)/State of the Union-"Axis of Evil" (2002)/Colin Powell on WMD to U.N. (2003) (tie)
6. Palin's convention speech (2008)
7. Hillary Clinton's concession (2008)
8. Zell Miller's keynote (2004)
10. Hugo Chavez at U.N.; Khaddafi at U.N.; Ahmadinejad at U.N., then Columbia (tie)