[jdswain]

I think 'Revolution in the valley' could qualify, it's not really a coffee table book, but the stories are so short you can pick it up and read one in a few minutes.

There is also 'Appledesign: The Work of the Apple Industrial Design Group', it's old and out of print but it's got some really interesting prototypes in there.

As others have mentioned there is also Dieter Rams book and Core Memory.

Might I also suggest Knuth?