All the visual Spielberg traits are apparent (including an obvious homage to "Close Encounters of the Third Kind" during the resolution), and yet the essence of the atmosphere--in which the world feels empty despite the prescence of crowded sidewalks and busy streets--is definitely Kubrick-inspired.
Though many of the sets are reminiscent of the spaceships in "Close Encounters of the Third Kind," thematically speaking, the Spielberg picture that "A.I." most closely resembles is "Schindler's List": both movies are infused with the terror of facing down a society that views you as less than human.
A.I. Artificial Intelligence belongs in the middle, completing the trilogy begun with Close Encounters of the Third Kind and E.T.; combining elements of searching and longing with elements of goopy, sappy sentimentalism.
From Close Encounters of the Third Kind, through the Indiana Jones series, The Color Purple, Schindler's List and Amistad he has, with varying degrees of success, meditated on issues like faith, life, and justice.
Working from Aldiss's short story and Ian Watson's screen story, Spielberg wrote and directed this film that marks just the second time he's ever assumed both roles (the first being in the far superior "Close Encounters of the Third Kind").
Speaking for myself, I’m going to go out on a limb here, but Spielberg’s already so far out on his that I feel it’s warranted, so here goes: As a work of cinematic art, A.I. Artificial Intelligence may deserve a place on the shelf between Spielberg’s Close Encounters of the Third Kind and Kubrick’s 2001: A Space Odyssey.