“Boogie Nights” By JASON BAILEY Paul Thomas Anderson took home his first Oscars (for best picture, director and adapted screenplay) at Sunday night’s Academy Awards, which may come as a surprise to those who have long considered him one of our finest filmmakers. But it’s a satisfying payoff for the writer and director, 55, who has spent nearly three decades synthesizing his copious influences and experimental instincts into a distinctive, inimitable style of his own. A look at his films to…