A review is an evaluation of a publication, service, or company. Popular reviews are about movies, video games, musical compositions or books. Other reviews are about cars, home appliances, or computers. An event or performance like a live music concert, play, musical theater show, dance show, or art exhibition are commonly reviewed. legal case decisions by a lower court may be reviewed by a higher court. In addition to a critical evaluation, the review's author may assign the work a rating to indicate its relative merit. Reviews are generally positive, neutral or negative.