Well I got Supercade for my birthday and I'm about half-way through it now. It's a great book. Definitely worth the money.
Only negatives ? Well, I would have loved to see more cabinet pics and esp. the vector game screen shots under MAME look like mmmmmmmhmhmhmhmh...
And there is no coherence between what the various writers have written about everything.
I mean, in the article about Apple there is no reference about Steve and Steve pitching the idea of a home computer to Nolan Bushnell first, while in an another article it is mentioned that they both worked at Atari before starting Apple.
But, it's all minor negatives, I love the book, very much recommended (in fact, I think it's a must-have for any arcade collector/fan).