These scripts of 54 radio comedy vignettes include advertisements, interviews, and skits by pros Bob and Ray. ``The Word Wizard,'' ``Stretching Your Dollars,'' ``Tippy the Wonder Dog,'' and ``The Dais Builder'' are particularly funny and typical. But Bob and Ray are most effective in their original medium. The plays on words, clever names, incompetent experts, and spoofs lose some oomph in print, and, collected together, they begin to seem a bit sophomoric and repetitive. However, most readers will enjoy at least some of these pieces, and would-be comedians could find good material here. Recommended. Annie Davis, Technology Training Associates., Cambridge, Mass.