Topic: need some help categorizing some of my films

i used to have my films on my shelves according to which studio made them but i decided to re-arrange them according to the following categories

horror
comedy
aliens
revenge
animated
action/adventure
martial arts
zombie
found footage

but the following films i'm not sure which category they should go under or if you can suggest a category that'll be great

underworld
black sheep (not the chris farley one)
grindhouse
tucker and dale
pontypool
priest
doomsday
insidious
the crazies
apollo 18
the host
nightmare detective
dead and buried
opera
the road
re-cycle
timecrimes
red state
rubber
predator
hobo with a shotgun
father's day

Re: need some help categorizing some of my films

underworld- Action/Vampire
black sheep (not the chris farley one)- Comedy
grindhouse-Action/Zombie (Planet Terror part)
tucker and dale- Comedy/Slasher
pontypool- Zombie
priest
doomsday
insidious-Ghost/Supernatural
the crazies- Zombie/ Infection
apollo 18- Aliens/Scifi
the host- Monster/Action
nightmare detective
dead and buried- Zombie
opera- Giallo
the road
re-cycle
timecrimes
red state- Action/Thriller
rubber
predator- Alien/Scifi
hobo with a shotgun- Action
father's day

Re: need some help categorizing some of my films

underworld - Action/horror
black sheep (not the chris farley one) - horror comedy
grindhouse - horror/exploitation
tucker and dale - horror comedy
pontypool - zombie
priest - why did you buy this? lol
doomsday - post-apocalyptic horror
insidious - horror
the crazies - horror thriller
apollo 18 - haven't seen it but from what I hear, sci-fi/horror
the host - Asian horror
nightmare detective - Asian horror
dead and buried - horror
opera - giallo
the road - post apocalyptic thriller
re-cycle - Asian horror
timecrimes - see apollo 18 above
red state - religious thriller
rubber - black comedy
predator - sci-fi/horror
hobo with a shotgun - splatter flick
father's day - haven't seen it, but from what I've heard, exploitation/horror