You can have google host it in 1 of 2 methods.
Method 1
<script type="text/javascript"
src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
// You may specify partial version numbers, such as "1" or "1.3",
// with the same result. Doing so will automatically load the
// latest version matching that partial revision pattern
// (i.e. both 1 and 1.3 would load 1.3.2 today).
google.load("jquery", "1.3.2");
google.setOnLoadCallback(function() {
// Place init code here instead of $(document).ready()
});
</script>
Method 2 (more common)
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
I know jquery.com host's the file as well for users, they might have redirected there jquery hosting to use the google version though.