Ebert, co-host of the television show At the Movies , has recycled his newspaper reviews of films and sandwiched them between an introduction that speaks generally of video's influence on films, and an afterword containing musings on what makes a ``great film.'' As a critic, Ebert is very easy to please, and while he can sometimes be witty, thoughtful analysis is not one of his strong points. Since there is little substance to the reviews, and because film titles are constantly being added to and withdrawn from the video market, individual patrons would be better off with Leonard Maltin's TV Movies (Signet, 1984), which has pithy entries and a much wider scope. Libraries should buy Ebert only if demand warrants. John Smothers, Monmouth Cty. Lib., Freehold, N.J.