Script

jQuery(function(){
    $.getJSON("js/sample01.json",function(data){
        $('p','#demo').remove();    
        $('#demo').append('<ul/>');
        $.each(data,function(i,items){
            $("<li/>",{
                text:'名前：'+items.name+'　年齢：'+items.age+'　スキル：'+items.skills.join(',')
            }).appendTo('ul','#demo');
        });
    });
});

JSON

[
    {
        "name": "技評太郎",
        "age" : 26,
        "skills":["PHP" , "JavaScript"]
    },
    {
        "name": "長谷川広武",
        "age":25,
        "skills":["HTML" , "CSS"]
    },
    {
        "name": "徳田和規",
        "age":26,
        "skills":["JavaScript" , "jQuery"]
    }
]

HTML

<div id="demo">
<h4>リスト</h4>
<p><img src="images/loading.gif" width="32" height="32" alt="" /></p>
</div>

Demo