Parentheses & Blocks, Function Expressions vs. Function Declarations

[LogicalTime]

The Parentheses (formally called the Grouping Operator) can surround only expressions, and a function expression is evaluated.

Return Here- lots to read:
http://kangax.github.io/nfe/

Function Expressions vs Function Declarations
Really nice example:
Why does this work: (function(){})(); but this doesn't: function(){}();
Two excellent resources:
http://stackoverflow.com/questions/1634268/explain-javascripts-encapsulated-anonymous-function-syntax