I've 1-clicked the book from Amazon the minute I saw Rich's  
announcement.  It's a good reading for how the language constructs are  
defined, but not too heavy on examples.  I say it complements Smith's  
and Harrop's books nicely in a way of a "boring" book going through  
all of the language in sequence -- something which was sorely  
missing.  If you force yourself to read it in a day, you'll find new  
things to old constructs when you're a an intermediate user.

Cheers,
Alexy