This is a great history of pedals and the love of pedals, the manufacturers as well as the players. They also touch on how some players are more of pedal players or technology players, rather than guitar players. (If The Edge has no effects, does he make a sound?)
There was also a wealth of information on the various pedal manufacturers, technologies, circuits, and mystique. However, on the whole it never focused and went on far too long.
In the process, only a very brief mention was given to DSP "pedals". Or even effects built into newer amps. The limiting factor of pedals (other than the cost and singular focus) is that you can not effectively change settings mid-concert or mid-song.
DSP based pedal solutions can save endless "patches" and settings, opening up a world of freedom, while incorporating many (though of course not all) features from the pedals they were based on.
In the end it could have been an amazing hour-long documentary, or possibly extending it to cover other subjects. As it was, I had to watch it in many pieces to be able to make it all the way thru. Still it is worth a watch for guitar players, and will likely have you going to check out some new pedals!