John Simonton, who created the Paia electronic kit company in 1967, has died after a battle with cancer. If you were a teenager in the mid 1970s and couldn't afford a Moog, a self-build Paia kit was a way to get your own synth (plus a working knowledge of soldering) for cheap. His well-designed kits earned him lots of friends and inspired many people to get into the synth business themselves. In the last few years, Paia underwent a resurgence, as the Internet pulled in new customers from all over the world, including several MT readers.
This thread at the MOTM (Module of the Month) forum has messages from some legends of the modular synth world, including John Blacet and Jurgen Haible, and there's also this blog for memories of John. I didn't know him, but I suspect his favourite legacy might be this page on the Paia site - the hall of fame, showing some of the amazing things that people built with his kits.
(Thanks to everyone who sent this in) (The picture is from Synthfool - hope you don't mind, Kevin)UPDATE: The 'memories of John' blog is really getting going now, and there's a nice story over at Matrix Synth.