Woody Harrelson plays Wilson, an unfiltered loner who invades the personal spaces of others and offers pointed critiques of contemporary society, whether he’s with an unsuspecting dog-walker, a train passenger or even someone taking a leak in the urinal. [...] his purported best bud, egged on by his acerbic wife (Mary Lynn Rajskub), moves away. [...] Wilson’s father dies of cancer, and our hapless antihero decides it’s finally time to be part of the human race again. The laughs continue when Wilson — with the help of social media, which he abhors — tracks down his ex-wife, Pippi (Laura Dern, always good), none too pleased as Wilson mentions her past crack addiction at her workplace. Director Craig Johnson and screenwriter Daniel Clowes (author of “Ghost World”) try to balance the biting humor with the more sentimental father-daughter story, with mixed results. [...] “Wilson” never gets boring, even as we scratch our heads during unconvincing set pieces involving a prison, a reunion with a pet-sitter (Judy Greer) who seems too good to be true, and a clunky visit to his daughter’s family home.