One thing I really enjoyed about this show is the nostalgia. This show will make you think about the shows you watched when you were a child, doesn't matter what age. It is fascinating to see what these voice actors do and see what shows and video games they work on. It is very interesting.
When it showed the voice actors, it would say a different show every time it shows the voice actor. So it is interesting to see what else they work on.
I do wish this documentary had even sections though. The movie will spend maybe 10 minutes talking about one thing and then maybe 5 minutes talking about another. It would have been better if they were all even. It would have made the movie a bit longer, but I see nothing wrong with that. Another thing is that they really never showed any clips whenever they talked about their work. So sometimes I would have to look up a clip to get a better understanding of what they were talking about.
Despite those complaints, this is a fun documentary that shows the voices of our beloved cartoons. It isn't anything that would have been Academy Award worthy, but I Know That Voice is a great documentary that people will enjoy watching.