Can you provide examples of parsing HTML?

Question

How do you parse HTML with a variety of languages and parsing libraries?

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When answering:

Individual comments will be linked to in answers to questions

Answer 1

Language: JavaScript
Library: jQuery

$.each($('a[href]'), function(){
    console.debug(this.href);
});

(using firebug console.debug for output...)

And loading any html page:

$.get('http://stackoverflow.com/', function(page){
     $(page).find('a[href]').each(function(){
        console.debug(this.href);
    });
});

Used another each function for this one, I think it's cleaner when chaining methods.