Spotlight: When CBS's 60 Minutes first aired in 1968, no one expected it to become one of network television's most popular programs ever. Yet 60 Minutes became the role model that all other investigative television programs have sought to emulate, and its clicking stopwatch became one of TV's most recognized images. In the beginning, there were two reporters: Harry Reasoner and Mike Wallace. Others, including Morley Safer, Ed Bradley, Dan Rather and Lesley Stahl, helped to make 60 Minutes the most-watched newsmagazine in TV history. Wallace, famous for his aggressive, hard-hitting interviews — and still an occasional contributor to the show — turns 90 today.

Quote: "What do you mean, you have no idea?" — Mike Wallace