Happy Birthday to Aussie singer Delta Goodrem (1984), thong lover Sisqo (1978), singer Nick Lachey (1973) of 98 Degrees, blues singer Susan Tedeschi (1970), WWE star Chris Jericho (1970), the Incredible Hulk Lou Ferrigno (1951), baseball Hall-of-Famer Bob Gibson (1935), astronomer Carl Sagan (1934; d. 1996), actress Dorothy Dandridge (1923; d. 1965), and Austrian screen siren Hedy Lamarr (1913; d. 2000).