why override canBecomeFirstResponder?
<p>I'm looking at TVAnimationGestures from WWDC 2010, and in the TableVieWController.m, they override canBecomeFirstResponder:</p>

<pre><code>- (BOOL)canBecomeFirstResponder {
    return YES;
}
</code></pre>

<p>Is there a reason they do this?  I don't see this method called anywhere.  Thanks.</p>
