"Stay alive" utility for Ubuntu?

[Jeffrey Needle]

On Mon, 04 Apr 2011 02:19:37 -0300, Lucio M Nicolosi wrote:

> On Sun, Apr 3, 2011 at 11:57 PM, Jeffrey Needle <jeff.needle at gmail.com>
> wrote:
>> Using latest build of Ubuntu on my desktop.
>>
>> Sometimes when I'm watching a movie that goes longer than 2 hours, I'm
>> wishing my screensaver wouldn't activate.  There's activity on the
>> screen, but none on the keyboard.  Is there some utility I can use to
>> prevent the screensaver from activating if there is movement on the
>> screen?
>>
>> Thanks.
> 
> Don't have an elegant answer, others certainly will, but as a shortcut
> you could well disable your screensaver for a couple of hours...
> 
> L.
> 

Indeed, it's what I do now.  Of course, being senile, I forget to turn it 
back on.

Thanks.