Watch Sadisflix. No, it's not a History Channel documentary about the Wright Brothers hosted by a famous songstress; this fascinating video features Hilary Duff's music video "Fly" and an exclusive behind-the-scenes look at the making of the video, with special never-before-seen footage. You'll be flying high when you see exactly what makes this singer-actress so talented … in both disciplines. (Hint: It's star quality!)