I think it's a great video to understand what Epicurus was opposing.
Part of what makes it valuable is that Carl Sagan has (I think) a pretty good popular reputation as a scientist. To hear his scathing criticism of Plato lends credence to our strong anti-Platonic views...makes it seem a bit less crazy, maybe, to be railing against Plato all the time.
The video itself is a bit dated. Might be cool if we could use the audio with our own images...but I assume there would be copyright issues with that.