I saw it at the theater and totally embarrassed my wife during the "speed rock"  scene.
It was so real and caught me off gaurd.  I came half way out of my seat screaming" ALL RiGHT!!!! "    "did you see that?  that was the real deal, not Hollywood..."    All the while she is holding me down telling me to be quiet.  
Man I went nuts.  The first time I have ever acted up in a theater   And to make it worse, it was a full house.
Oh yeah, bought the DVD.
A must have.