“RUBY SPARKS” (2012-104 min.). Calvin Weir-Fields (Paul Dano), a novelist struggling with writer’s block, starts writing a book about his feminine ideal, a character named Ruby Sparks, only to find that he has willed her into existence. Zoe Kazan scripted and plays the title role. Jonathan Dayton and Valerie Faris directed this romantic fable. 7:30 p.m.