This article got me watching Tetris on youtube. I plan to check out the documentary it mentions; seems like a good complement to The King of Kong et al.
Flash games are a very important part of game dev history. But despite millions of games available on thousands of websites, I only ever played or will ever play tower defense games.
David Kushner's Masters of Doom is on my reading list, though I'm more interested in the making of Commander Keen than of Wolfenstein and Doom (which I never found very fun).