In his keynote address at the PBS Annual Meeting, June 22, 1997, David McCullough celebrated the value of history, the joy of collaboration in making films and both the achievements and promise of public TV. McCullough, a celebrated historian whose biography of President Truman won a Pulitzer Prize, has narrated many documentaries, including Ken Burns’ The Civil War and hosted the PBS series American Experience for 10 years. Did you know that if you were a flea, you could jump as high as Rockefeller Center? And, furthermore, you could do it 30,000 times without stopping? I learned that from Miriam Rothschild, who is the world’s leading expert on fleas.