Drew Barrymore - An adorable child star who overcame an out-of-control adolescence and reclaimed her post as America's mischievous but pure-hearted sweetheart, Drew Barrymore rode a career rollercoaster spanning two decades before the age of 25. The product of an acting dynasty that runs from great-great-grandmother Louisa Lane Drew through grandfather John Barrymore, the youngest Barrymore showed promise right…