I came across a very interesting audio recording of a lecture of Alessandro Cortini (ex Nine Inch Nails) about modular synthesizers, musical interfaces and the Buchla 200e. He gave this lecture at the Concordia Electroacoustic Studies Student Association in 2009.
I can relate to a lot of what he has to say about using physical interfaces for electronic instruments (in comparison to software interfaces). He also demonstrates the enormous sonic diversity of the Buchla 200e modules.
If you’re interesting in those things, you should listen to it!