This one: http://www.amazon.com/Pro-LINQ-Language-Integrated-Query/dp/...

The example on page 3 was:

   Dim greetings() As String = {"hello world", "hello LINQ", "hello Apress"}

   Dim items = _
     From s In greetings _
     Where s.EndsWith("LINQ") _
     Select s

Which In Smalltalk would be:

   greetings := #('hello world', 'hello LINQ', 'hello Apress').
   items := greetings select: [:s | s endsWith: 'LINQ'].

Needless to say I was not completely bowled over by this stunning Microsoft innovation.