Season 7s American Idol, David Cook, turned 27 years old on Sunday. This past year has been a very busy and successful one for the rocker. After winning the title of American Idol in May of 2008, David toured across the country with his fellow finalists on the American Idols LIVE! Tour. Just 13 months ago, he released his self-titled album. David Cook has already been Platinum certified by the Recording Industry Association of America. The album also performed well on the Billboard charts, peaki...