Each week, TR Dojo provide advanced technical tips and advice to help IT pros become IT Ninjas in the workplace. But that doesn’t mean there isn’t time for tech on the weekend. In this Friday TR Dojo post, I’m highlighting a really cool episode from CNET’s Hacks show that TiVo HD owners will want to watch. In the show, Brian Cooley, CNET Editor-at-Large, shows you how to add more space to your TiVo using an external hard drive.