Homebrew Computer Club
When the Apple I debuted at a meeting of the Homebrew Computer Club, it was practically like the scene in Back to the Future where the kids of 1955 heard Rock n' Roll for the first time. Here were a bunch of brilliant, driven hobbyists that had beaten the odds and cobbled together their own equipment using mostly second-hand parts and bare-knuckle ingenuity, some of which had to have programs toggled in with switches, some could be programmed in hex/assembly language, a very, very few were capable of driving video displays and running a high-level language like BASIC. Prior to this, the most excitement had probably been when someone figured out how to get an IMSAI to play music. (through a radio picking up stray RFI from it) Then Woz walks in with the fruits of his tinkering and here is a computer on a board, ready to hook up to a TV, ready to run BASIC and truly be interactive. (a case is optional--Otterbox, anyone?) This was a game-changer of the same significance to the early days of computing as when someone took a burning branch from a lightning-struck tree and brought fire back to their cave for home use.
Linux is very significant too, but more in the sense of a political revolution freeing the enslaved, and not in the sense of putting the first wheel on an axle.
Those that have read my posts here re. Apple know that I am not a fanboi of modern Apple kit, but please give credit where credit is due. If it weren't for Woz's passion for micro computing, as well as technical prowess, Steve Jobs would likely have still been successful, being the driven man he was, but perhaps his career would have been with another early innovator, or more likely you'd have seen him hawking wares on late-night infomercials, or selling Nordic-tracks or similar.
Meanwhile, I'll keep going to garage sales, hoping for a find like this. The hardest part would be deciding whether to keep it or sell it.
Re. the humble 6502, there probably hasn't been a more used CPU in history. They are still everywhere in the world, in the form of embedded controllers. (think light switches, coffee makers, industrial machinery, medical equipment, etc.)