These are indeed interesting and usually unexpected ways to die. The re- enactments are supplemented by factual information provided by experts, either in a general (scientific) sense or while extrapolating the specific circumstances that had to take place in order for the unique fatal event to occur.
Can work as cautionary tales, but my biggest objection is that the narration appears to be attempting to make light of the misfortune experienced by the victims. This doesn't work because in 98% of the cases the victims couldn't have possibly known that they were putting their lives at risk. These people, in most cases are not stupid deaths, and as a result the narrative tone does them a huge disservice and strikes me as very disrespectful. That is the only reason I dropped my score as much as I have.
Despite this I do see merit in the program, and it is the essentially my only objection to the show. As the first reviewer states, this is not for the squeamish or delicate (although none of the depictions are particularly graphic), but there is still valuable and intriguing information contained within the contents of this show. Definitely worth watching for the right audience and as a learning tool.