The Great Buster: A Celebration, a new documentary film by Peter Bogdanovich, celebrates the artistry of silent film star Buster Keaton. Bogdanovich uses film clips, along with interviews with Mel Brooks, Bill Hader, Werner Herzog and Quentin Tarantino, to honor the talented Keaton. The movie makes its Cleveland debut tonight at 9:25 p.m. at the Cleveland Institute of Art Cinematheque, where it screens again at 6:50 tomorrow night. Tickets are $10, or $7 for Cinematheque members and students. (Niesel)