I would tell you its peak position, but for some reason Billboard.com didn't give Beyonce a page of her own? Most artists have their own page that tells us where each of their singles peaked at and what charts they were on.
I voted for Deja Vu! It's just so unique and different and artistic, unlike some of Bee's other videos. I also loved Baby Boy, Crazy In Love, and Naughty Girl videos too though. It was a tough decision but Deja Vu just seems more creative to me, I love the cuts/editing, the camera moving up and down, all of her different looks, the intro with the "808" and her back against the wall, and the Jay-Z's second rap with Bee coming into her solo dance sequence.
