AGE: 52. ACHIEVEMENTS: Cofounder, DreamWorks SKG; movie producer (Interview With the Vampire); AIDS benefactor (most recent gift: $4 million to Gay Men's Health Crisis and God's Love We Deliver). WHY HE'S OUT: ''Life's too short.'' CAREER IMPACT: ''I don't think anyone is shocked, particularly, that anyone is gay in the '90s.'' ON THE PER CEIVED HOMO-EROTICISM OF VAMPIRE: ''It didn't have anything that was in any way gay. It's not about sex at all, it's about people who never grow old or die. If good-looking men in close proximity is homoerotic, so be it. I suppose to some people Newt Gingrich and Bob Dole might be homoerotic.''