Project Runway host and all-around fashion guru Tim Gunn turns 56 today. Fashion designer Cynthia Rowley is turning 51. Publishing heiress Anne Hearst is 54. ABC News president David Westin is turning 57. Artist Jenny Holzer is 59. Choreographer Paul Taylor turns 79. IBM chairman Sam Palmisano is turning 58. Hotel owner Sam Chang turns 49. Patti Scialfa, the singer, songwriter, and wife of Bruce Springsteen, is 56. Filmmaker Ken Burns is turning 56, too. Actor Josh Radnor turns 35. Stephen Dorff is 36. And Tony Sirico, who played Paulie Gualtieri on HBO's the Sopranos, celebrates his 67th birthday today.