Is there a difference between Holy Hip Hop and Hip Hop?

I was youtubing some ministry videos this past week and came across some interesting clips about Holy Hip Hop. Some of the clips are from Exministries' DVD "The Truth Behind Holy Hip Hop: The Trojan Horse."
So my question is, is there a difference between Holy Hip Hop and Hip Hop. Here are a few videos that expose the truth behind the music. I know that as Christians we are suppose to be separate from the world.

"But know that the LORD has set apart the godly man for Himself" Psalm 4:3

Here is a clip from the dvd that showcases an experiment to determine if there is a difference:

For me, clearly there is no difference and it's whack!!!!

AND MAY THE GOD OF PEACE HIMSELF SANCTIFY YOU THROUGH AND THROUGH, SEPARATE YOU FROM PROFANE THINGS, MAKE YOU PURE AND WHOLLY CONSECRATED TO GOD; AND MAY YOUR SPIRIT AND SOUL AND BODY BE PRESERVED SOUND AND COMPLETE AND FOUND BLAMELESS AT THE COMING OF OUR LORD JESUS CHRIST (THE MESSIAH)." I THES. 5.23 (AMP)

Here is a link to a clip of young people you listen to Hip Hop and are giving their opinion about Holy Hip Hop:
http://www.youtube.com/watch?v=_Ozu3WHqJS4
Here is a another clip from the movie that I really liked because this young lady is on fire!
http://www.youtube.com/watch?v=oyHvhT7sgqc

What do you think?
For more information on the dvd go to http://www.exministries.com/