Pioneers of Television (in stores today) is a pretty big title for a documentary series, especially one that lasts only four episodes. You wonder, what are they going to mention and what are they going to leave out? This PBS show isn't the most comprehensive look I've seen on each of its subjects, but for one miniseries in one package, it's actually well put together, and you're going to see some TV footage, photos, and interviews I bet you've never seen before.