Bangkok is an extremely tolerant destination for Gays and Lesbians, as sexuality is an integrated part of their practice of Buddhism.  Gay harassment is virtually unheard of, and Bangkok is often referred to as the gay capital of Asia.  Whatever your scene, Bangkok has it.  The gayborhood is centered in Silom, though there are gay-specific venues in Sukhumvit and down Khao San Road as well.  Affordable and often over-the-top, a gay-centric visit to Bangkok will no doubt impress.