Upload

<html>
<head>
<title>Exemplo</title>
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<style type="text/css">
#draggable { width: 150px; height: 150px; padding: 0.5em; }
</style>
<script type="text/javascript">
$(function() {
$("#upload").change(function(){
$("#retorno").text($("#upload").attr("value"));
});
});
</script>
</head>
<body>
<div><input type="file" id="upload"></div>
<div id="retorno">===X===</div>
</body>
</html>

mask

<html>
<head>
<title>Teste</title>
</head>
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="js/jquery.maskedinput-1.2.2.min.js"></script>
<script type="text/javascript">
$(function() {
$("#date").mask("99/99/9999");
$("#phone").mask("(99) 9999-9999");
$("#cpf").mask("999.999.999-99");
});
</script>
<body>
<p>
Data: <input type="text" id="date" />
</p>
<p>
Telefone: <input type="text" id="phone" />
</p>
<p>
CPF: <input type="text" id="cpf" />
</p>
</body>
</html>

Money

<html>
<head>
<title>Exemplo</title>
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<script src="js/jquery.maskMoney.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
$("#real").maskMoney({symbol:"R$", decimal:",", thousands:".", precision:2});
})
</script>
</head>
<body>
<p>Valor em R$: <input type="text" id="real" /></p>
</body>
</html>

Letras Maiúscula e Minúscula

<html>
<head>
<title>Exemplo</title>
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#maisc").keyup(function(){
$(this).val($(this).val().toUpperCase());
});
$("#min").keyup(function(){
$(this).val($(this).val().toLowerCase());
});
});
</script>
</head>
<body>
<p>Maiúscula: <input type="text" id="maisc" /></p>
<p>Minúscula: <input type="text" id="min" /></p>
</body>
</html>