Anyway, it looks like it will get an obvious R-rating due to gore, violence and action, but the cool thing is that it looks like it's going to be funny, too. :-) Kind of makes me think of the 1980 movie Motel Hell which was scary, gory and funny all at the same time.
I mention Slither here because I have a feeling that it's one of those little gems that might slide under the radar due to lack of studio promotion and that you might miss it. Filmforce has a set visit piece and a clip from the movie (R-rated clip) that gives some background on what the director (James Gunn) had in mind when creating the film.
If you share the peculiar attraction to funny horror films that I have, shoot over and have a look or visit the official site.
Slither opens March 31st.