I've said this before but I got a free ticket to watch it so I watched it.
The only movie I've ever seen that was worse than that was The adventures of Pluto Nash, and The adventures of Pluto Nash taught me how to recognize what a bad movie was.
I have posted a full review a while ago here so if you want to read that just scroll through my history and it's not that far down, I'm not going to repost a 500 word article here.
I had heard the movie was bad so I did not read any of the reviews before watching it and I did not know Jack Black was in it until the credit scene started rolling.
They used enough modulations and filters on his voice to where you can only barely tell that it's Jack Black.