This theoretical paper is devoted to research of computer metaphor’s sources. Metaphors are actively used in designing of modern interaction and visualization systems. The paper contains the discussion of problems of metaphor search and/or metaphor generations. One of possible hierarchy of computer metaphors is described. There are global and local interface and visualization metaphors and also metaphors of widget (or operation metaphors). Taxonomies of existing computer metaphors are considered as well as criteria for adequate selection of metaphors. One of taxonomies is based on source domains of computer metaphors (everyday life, theater, physics, astronomy, etc.). It is useful to analyze magic fairy tales, and science fiction and fantasy stories as a source of computer metaphors. Criteria of metaphor selection aid to create adequate scenarios of interaction and visualization, in particular, for end-user programming systems and virtual reality environments. On this base one can search metaphors to design virtual moving, navigation and communications in virtual spaces.Ключевые слова: Computer metaphors, Metaphor source domains, Metaphor analysis.