Posted by Double M
If you haven't figured it out: 'round here we tend to like Rock Band/Guitar hero. I have no clue what role the karaoke part plays into that but it's definitely part of it.
In any case, it looks like "Billy Blanks Jr." is trying to capitalize on his dad's "fame" from Tae Bo workout videos with his own workout videos Cardioke. Apparently, you sing while working out. I have no clue whether this would be effective, but it sure is funny to watch.