And You Thought It Was…Safe(?) – Lots of online review shows make you laugh, but this is the only one I can name that also provides insightful commentary and openly celebrates when a movie is good.
CthulhuWho1’s Blog – A fantastic resource of Lovecraftian images and audio adaptations (complete with links to free downloads).
Tars Tarkas – If you’re looking for a b-movie review website with a focus on international (especially Asian) cinema, consider your search over.
Dream and Friends – Video games and humor. Usually both at the same time.
Bad Cinema Diary – A monthly smörgåsbord of bad movie reviews.
Zombos’ Closet of Horrors – I don’t know what’s better: the reviews or the massive collection of film publicity materials. Take a look there and decide for yourself.
Propnomicon – As the name suggests, this blog dedicates itself to tutorials on making horror and fantasy props (with a focus on things inspired by the works of H.P. Lovecraft).
MJSimpson.co.uk – Tons of cult movies reviews, along with numerous interviews with people involved in the British film industry.
The After Movie Diner – The only podcast I know of which combines comedy sketches and catchy original songs with interviews and bad movie reviews.
Haunt Style – Features an in-depth look at the trends in Halloween decor (along with a great selection of spook show posters).
Cephalopod Productions – One of the top sources on making Call of Cthulhu props.
NathanShumate.com – The blog of the man behind the now-defunct Cold Fusion Video Reviews website has tons of great homemade props.
Old Fashion Halloween – I think the blog’s name speaks for itself…