DVR with Voice Activation

Has anybody been able to use voice activation or speech recognition to record programs? I'm working on setting this up and writing a thesis for my Master's degree at NYU.

If you're interested in the topic, please help by completing my survey on SurveyMonkey. I'm hoping to generate interest so that we can keep improving the devices we love to use...

Here's the URL:

http://www.surveymonkey.com/s.aspx?sm=d4YVs27F_2bRrosVtYBQ0FIw_3d_3d