Brad Fitzpatrick -
https://bradfitz.com/ - Started and sold LiveJournal, wrote memcached, works on Golang at Google now. Always enjoy his talks on YouTube. My favorite part is that he doesn't come off as super serious so I find subtle humor in his delivery.
In one of his videos where he talks about HTTP/2, he says "HTTP/2 is just supposed to be a better wire format for HTTP, so it's not that interesting". In an earlier video, Brad and Andrew Gerrand screencasted building a full implementation of the protocol in Golang in under 3 hours on YouTube. To the average programmer that would take days to get working and we'd be so excited when it was done we'd be telling everyone who would listen how awesome it is.