Apple CEO Tim Cook came out Thursday, announcing that he is gay in a column in Bloomberg Businessweek. "Let me be clear: I'm proud to be gay, and I consider being gay among the greatest gifts God has given me," he wrote. Cook had not publicly discussed his sexual preferences before. He said that he had tried to maintain "a basic level of privacy" but decided that desire for privacy was stopping him from working for the benefit of others. See some of the other celebrities who are openly gay -- and proud of it.