Actually, yes, Tool WAS featured. The band wasn't present, but the second best person to speak for them was there. I'd have loved to see or hear from a cat like Maynard or Danny Carey or Adam Jones, but I also know that this series has been in the works for a number of years now, and that the guys in Tool aren't the easiest cats to get ahold of.
There are two things about the prog metal episode that REALLY pissed me off, despite the fact that I deeply love both bands. First, the excessive amount of coverage on Rush. I saw Beyond the Lighted Stage, I'm a big fan of that flick, and to be perfectly honest, I do not labor under the delusion that very many people who AREN'T familiar with Sam Dunn's earlier works were tuning in to this series. There should not have been as much Rush coverage as there was. And, given the metric fuckton of killer prog metal bands that exist out there, there CERTAINLY should not have been as much Mastodon coverage as there was. Opeth, for example, is certainly one of the most important prog-metal bands of the last 20 years; in fact, you see Sam Dunn wearing an Opeth shirt when he's getting ready to interview the guys from Queensryche. Where the hell were they? Where the fuck was Steven Wilson or Porcupine Tree? How about System of a Down? Sure, they might not bear the traditional prog-metal hallmarks, but when you consider the type of music they were creating, and the fact that they came to prominence in the middle of the nu-metal movement....I'll be honest, I always felt like they were Rage Against the Machine with more melody.
Hell, Rage themselves could have been in the Prog episode. I defy most people to find a more interesting or diverse guitar player than Tom Morello for the time he came to prominence. And the fact that Fates Warning was never even touched upon, between Queensryche and Dream Theater? Fucking CRIMINAL!
I, personally, am praying for a second season of this show, because there was SO much left untouched, even in the genres featured.