It seems like it's been an exceptionally long time coming for Keri Hilson. After all, she's been getting super-hyped since her appearance on Timberland's "The Way I Are." With vocals touched by the Auto-Tune fairy, and accompanied by Kanye West and Ne-Yo, her video for "Knock You Down" is nice. The slow motion falling effects are good, and the plot certainly fits with the story. It's no small feat to hold your own against Kanye and Ne-Yo, but she does it well. She stays at the center of it all, and her charisma is convincing enough to sell the idea that she would be at the center of this love triangle.