Schwarzenegger on Leno Schwarzenegger, best known for playing a killer robot in three "Terminator" movies, opened his campaign with a raw display of the extraordinary media platform at his disposal, announcing his candidacy on NBC's "Tonight Show With Jay Leno." Among those caught off-guard by the announcement was his close friend and another potential candidate, former Los Angeles Mayor Richard Riordan. One of Riordan's closest advisers said the mayor thought he had an understanding that Schwarzenegger would withdraw from the race, easing Riordan's way in. Riordan aide angry "So this is what it feels like to be mugged," the adviser...