I usually wouldn't cite Cracked as a source but I think they get the basics right, even if I disagree on some of the details, and they do cite more authoritative sources. I also think the broader point, that movies and media have distorted societies sense of reality in dangerous ways, is valid.

I doubt that most people are silly enough to voluntarily expose themselves to such threats, granted that it is hard, verging on impossible, to overestimate how stupid people can be, but I suspect the greatest danger is that people might take a hard knock or be around an explosion, and assume it is no big deal. Like in the movies.

http://www.cracked.com/article_18862_6-deadly-injuries-you-think-youd-survive-thanks-to-movies.html