WHAT WORKS: It reminds me a little of WUSHU, but better, in the sense that there is more of a "game" to it, and I oddly like my games to have "game" to them. A good amount of text in the 28 pages, so this doesn't feel at all just thrown together. I could definitely see supplements detailing Flavas, Mooks and so on for Fantasy and Scary type games.
WHAT DOESN'T WORK: The term "Flava" really bugs me, but that's just a personal thing. On one hand, it's a tad too "meta" at parts for me to take seriously, but then, it also explicitly says it's not a serious game. Providing advancement rules for what seems to be a pick-up game seems odd, but I also realize that advancement rules would have been the first thing brought up if they hadn't been included.
CONCLUSION: BADASS certainly isn't the first attempt at modeling crazy, action movie stuff, and it won't be the last, although the "Average Joe" stuff is certainly unique, as far as I can recall. I don't like it quite as much as I do WRM or RAG, as I like at least a bit more detail in my games than this, but a couple of swell supplements like WRM had (and this is released under a Creative Commons license) and I could easily change my tune. This is one of tjose games I'd like to try, but I'm worried about, because I think the bits used to trigger more Badass Points could get old, fast, although the fact that they are all limited to once per fight or once per session certainly helps. Good effort, but from reading it feels both like it could be a bit tighter and a bit beefier...then, I think, it would really shine.
[4 of 5 Stars!]