THE SPARK - Bob Simon reports from Tunisia, where protests against the repressive government not only toppled its autocratic ruler, but sparked the uprising in Egypt that forced President Hosni Mubarak to resign. Draggan Mihailovich and Nathalie Sommer are the producers. SCOTT BROWN: AGAINST ALL ODDS - The Massachusetts senator describes his traumatic childhood, including revelations of sexual and physical abuse. Lesley Stahl reports. Karen Sughrue is the producer. THE KING'S SPEECH - 60 MINUTES talks to its starring actor, Colin Firth, and reports on the historic find in an attic that helped make the "The King's Speech" an Oscar favorite. Scott Pelley reports. Ruth Streeter is the producer.