[jQuery] jQuery Newbie - Getting value of a Select Option

[EasyThereTiger]

I'm a complete newbie to jQuery trying to perform a relatively simple
task, but can't figure it out.

Based of the value of a select option, I want to hide/show a div. How
do I get the value of the select option? Here's what I have below.

Thanks for your help!

$(document).ready(function(){
        var hearOther = $("#hear_other");
        hearOther.hide();
        $("#hear").change(function(){
                if( $("#hear_other option[value='O']")){
                        alert('show hearOther');
                }else{
                        alert('hide hearOther');
                }
        });
});

<select id="hear">
        <option value="T">Television</option>
        <option value="R">Radio</option>
        <option value="O">Other</option>
</select>
<div id="hear_other">Please describe &ldquo;Other&rdquo;</div>