It would be great to be able to enclose matched result in autocompletion with tags we wants.

Something like that : 

1. $("input").autocomplete({
2.       source: "url.php",
3.       minLength: 2,
4.       delay: 750,
5.       appendTo: "#tag",
6.       match: function (matched) {
7.             return "<strong>" . matched . "</strong>"
8.       }
9. });