Lifelong Learning! The Houston Junior Forum Recreation Center for Older Adults announces a new semester of intellectual stimulation for Matlock fans and other elderly Houstonians. Speakers such as District Attorney Johnny Holmes and lawyer Joe Jamail will give talks, and classes will cover everything from medical news to musical instruments. Shannan Doyle of UH-Downtown, a brave woman, will teach a class on the World Wars and the Great Depression for students who might very well have firsthand knowledge of the subjects. No grades or exams! Students must be 55 or older, or attending as part of a couple and married to someone 55 or older. The semester beginning today continues through May. For more information, or to register, call 528-5395. $30; $50, couples. One fee payment entitles a student to attend as many classes as he or she likes.