Though it came out in late October, Steve Jobs by Walter Isaacson has already reached the top of Amazon's best-seller list, and is now the best-selling book of the year, MacRumors reports. Amazon had predicted the authorized biography would lead the list. It reached No. 13 soon after its debut and was at No. 2 by mid-November. In related news, MacRumors notes that George Clooney or Noah Wyle could portray Jobs in the movie version; Aaron Sorkin is considering writing the screenplay.