I am an avid SP fan, and it was really cool to watch Matt and Trey do the voices in person, and then watch the audio guys change the tone to match the SP characters. Watching this also helps me understand why negotiating new seasons with Matt and Trey is always such a drawn out process...every year after a successful season, they always say they don't want to do it anymore. Why? It's because it takes them only 6 days to finish an entire episode, and everything is done in-house- concept, voice/audio, drawing/ legal/ animation. For comparison, Family Guy records their music in-house with a live orchestra (very cool) and they do the voice recording in-house, but they outsource the drawings/ animations to South Korea. I can see why things get stressful when they don't have a complete project and it's 1 day to air. They're talking about how disappointed they are when it's not going to be a day when they work till 5 am, but instead a 9 or 10 am day. It sounds so brutal, and it really is amazing how they keep it so fresh.
This is definitely a much watch for all fans because it helps you appreciate and love the show even more. It's so chaotic and beautiful behind the scenes, and Matt and Trey are geniuses!
Spoilers but not really: It was really funny to watch their legal lady try to explain graphics scenes to the FCC on the phone, that was definitely something I had never thought of or appreciated until I saw this documentary. Imagine being the animation guy who has to finish everything in such a short period because they are adding ideas until the very last day, or being the guy who has to drive through LA traffic to get the tape into Comedy Central's broadcasting center a mere hours before the show is due to air. It was insane to watch Matt and Trey riff of each other and turn an idea into a snowball and keep going. They have such great chemistry and you can tell they really like each other and have tremendous respect for each other.