Happy Birthday to actor Joaquin Phoenix (1974), Former Denver Broncos running back Terrell Davis (1972), singer/songwriter Ben Harper (1968), Pretty Woman Julia Roberts (1967), software tycoon Bill Gates (1955), Olympic gold medalist Bruce Jenner (1949), NYPD Blue actor Dennis Franz (1944), southern rock fiddler, Charlie Daniels (1937), and discoverer of the polio vaccine Dr. Jonas Salk (1914).