I actually thought it was hilarious. I am a huge Tarantino fan and I love how they incorporated some of his big hits.
I don't see how it is offensive at all. Hell is it any different than Robot Chicken's "Kill Bunny" Kill Bill Jesus Spoof?
Or Jesus Christ going on a Commando Mission to save Santa Claus after his sleigh is shot down over Iraq?
"My Children, there is something you should know...I'm packing!"
