Legendary comedian Bill Cosby turns 75 years old today. The comedian, actor, activist and author’s career has spanned five decades. Cosby has starred in and produced some of Americas best known  television shows. In the eighties he was Americas favorite TV dad Cliff Huxtable for eight seasons on The Cosby Show. He helped break down racial barriers on television and has raised black consciousness in recent years with his controversial statements abut African-American culture.