OCCUPATION: Tribune Co. chairman and CEO
PREVIOUS APPEARANCES ON THE TIME 100: 0
PRO: Two years ago, his purchase of Tribune made him one of the last media moguls in the country, with holdings that included both the Chicago Tribune and the Los Angeles Times.
CON: He never owned a newspaper before the deal, and it shows. Zell sparked staff-wide insurgencies with his massive newsroom cuts and profanity-laced tirades.