1. A television presentation system, comprising: a television signal receiver for receiving a television signal from an external source; a closed captioning decoder for extracting from said television signal a closed captioning stream of textual data; means for receiving from a user one or more search parameters, said search parameters representing information content of interest to the user; means for searching said stream of textual data for occurrences of textual data matching said one or more search parameters; means for identifying one or more segments of said television signal, each said segment corresponding to an occurrence of said textual data matching said one or more search parameters.
1. A television presentation system, comprising: a television signal receiver for receiving a television signal from an external source; a closed captioning decoder for extracting from said television signal a closed captioning stream of textual data; means for receiving from a user one or more search parameters, said search parameters representing information content of interest to the user; means for searching said stream of textual data for occurrences of textual data matching said one or more search parameters; means for identifying one or more segments of said television signal, each said segment corresponding to an occurrence of said textual data matching said one or more search parameters. 7. The television presentation system of claim 1, further comprising a display for displaying a television signal, wherein said display, said television signal receiver, said closed captioning decoder, said search parameter receiving means, said searching means, and said segment identifying means are an integrated unit.