tiene que tener un orden especial?
aca te paso uno que muestra del primero al ultimo    
Código HTML:
Ver original<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript"> $( function(){   
    $("#tips li:eq(0)").show();
    setInterval("mostrar()",1000);
});
mostrar = function(){
    li = $("#tips li:visible").hide();
    liNext = li.next();
    if(liNext.length){
        liNext.show();
    } else {
        $("#tips li:eq(0)").show();
    }
};
#tips, #tips li{
    margin:0;
    padding:0;
    list-style:none;
    }
#tips{
    width:250px;
    font-size:16px;
    line-height:120%;
    }
#tips li{
    padding:20px;
    background:#e1e1e1;
    display:none; /* hide the items at first only */
    }
    <li>... if you want to become a better coder you need to eat your vegetables?
</li>     <li>... it takes more time to code a web page then to make a pizza?
</li>     <li>... you should validate your code?
</li>     <li>... jQuery is your friend? For real!
</li>     <li>... no matter what some people claim, you can't learn CSS in 3 hours?
</li>