I'm doing this all now because I'm bored, the questions are fun, and I know I'll most likely keep forgetting to do this on a daily basis.

Day 01 - A horror film that no one would expect you to love, but you do?

I'm not really sure. 

Day 02 - The horror film that you relate most to

I don't relate to any.

Day 03 - Your favorite slasher

Jason Voorhees.

Day 04 - Your favorite werewolf film

I've hardly seen any.

Day 05 - Your favorite monster movie

Again, I've hardly seen any. 

Day 06 - Your favorite vampire movie

The Forsaken

Day 07 - Your favorite supernatural horror film

Poltergeist

Day 08 - Your favorite anthology

I'm not sure I've seen any.

Day 09 - Your favorite exploitation / grind house type film

Ah, I'm quite certain The Devil's Rejects fits right into this genre.

Day 10 - Your favorite psychological horror film

The Silence of the Lambs

Day 11 - Your favorite science fiction horror film

28 Days Later

Day 12 - Your favorite horror film involving the occult
I don't know.

Day 13 - Your favorite horror comedy
Shaun of the Dead

Day 14 - Your favorite zombie film
1974 Dawn of the Dead, 28 Days Later, Fido, Shaun of the Dead

Day 15 - Your favorite horror film involving serial killers
 Hm, this is too specific--a lot of horror killers could be considered serial killers.

Day 16 - Your favorite childhood themed horror film
Childhood-themed?

Day 17 - Your favorite horror film remake
Although I have yet to see the original, I thoroughly enjoyed The Hills Have Eyes remake.

Day 18 - Your favorite foreign horror film (outside of your country of origin)
I'm in Canada, so quite a few films would count as foreign based on your question.

Day 19 - Your favorite horror film involving the powers of Hell or Satanism
I'm not too sure...

Day 20 - Your favorite horror film involving a killer animal
Aw. Cujo :(

Day 21 - Your favorite medical horror film
Hm, I don't know.

Day 22 - Your favorite horror themed TV show
Supernatural

Day 23 - Your favorite made for TV horror film
I have no idea.

Day 24 - Horror film in which you prefer the edited version over the director’s cut
I have no idea.

Day 25 - A horror film that you used to hate, but now like
I never used to hate it, but I was terrified of Scream when I was younger after watching the second film--I could never use public washrooms without feeling terrified, haha. Uhm. And then I watched Scary Movie, and now love the Scream series and Ghostface (Billy and Stu from the first are my favourites) :D

Day 26 - Your favorite horror film to watch as a child
I never had a favourite to watch...I just watched whatever my brother or cousin would put on.

Day 27 - Your favorite guilty pleasure
I don't have any.

Day 28 - Your favorite horror film that no one’s ever heard of
I'm sure that's not even possible. But maybe Fido or The Frightening as a lesser known film.

Day 29 - Your least favorite horror film of all time
I'm not sure. I didn't really like The Ring.

Day 30 - Your favorite horror film of all time
The Forsaken! :D