Last
week's revealing phone call between a Buffalo Beast prankster and
Wisconsin governor Scott Walker clarified the extent to which
billionaire rainmaker David H. Koch manipulates public officials.
But
Koch doesn't just play puppeteer with politicians. He also has his hooks into public radio and television: although it has not been widely reported, Koch is a trustee at
the Boston-based WGBH, PBS's largest producer of web and television
content.