The Museum of Bad Art is dedicated to the ''collection, preservation, exhibition, and celebration of bad art in all its forms and in all its glory.'' The museum's holdings comprise about 250 master works divided into three collections: portraiture, land scape, and unseen forces. About 25 are displayed in the gallery, located in the basement of the Dedham Community Theater in Dedham Square. Can't get there? You're in luck; the collection is also online. 580 High St., 781-444- 6757, museumofbadart.org. Free.