ASCIIwwdc offers searchable full-text transcripts of the WWDC 2013 session videos (via Mattt Thompson). Great work. The transcripts are from the .srt files files provided by Apple, but presumably Apple will frown on this distribution of their content and have it shut down. You could download the site via wget or, later, use the source code to regenerate it from .srt files that you download from Apple.
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