As a guy with a wide range of interests, simply one listing of links to websites I enjoy just isn't enough!
Xenorama - Xenorama is "The Page of Heroes and Monsters," along with an amazing article about an alternate version of The War of the Gargantuas.
Side Order of Ninjas - Funny and entertaining reviews of strange and amazing films.
Hauntcast - The internet's premier online radio station for home haunters and Halloween enthusiasts.
Grindhouse Database - The cult movie community's answer to the Internet Movie Database.
Weird NJ - Strange destinations and urban legends from New Jersey.
Home Haunt News - News and reviews no haunter should be without!
alt.horror.cthulhu - One of the few newsgroups out there that has regular, non-spam activity.
Skook - Tons of great artwork, including modernized (but faithful) renditions of Paul Blaisdell creations.
Tomb It May Concern - If Yor Week isn't enough to convince you to read this, I don't know what will.
Tough To Kill - An amazing look at European action flicks by Paul Cooke and the owner of the above site.
Home Haunter's Haven - The name says it all.
The Laughing Reindeer - Back in the day, there used to be a website called "Monster Shindig" that reviewed horror movies, roadside attractions and the like. Although it died, one of its creators set up this blog. Did I mention that he was one of the people responsible for Carnivore?
Monster Shindig - I found this while looking for information about the now-defunct monstershindig.com. It's not related, but still seems cool.
3B Theater - Any bad movie review site inspired by Strange Brew is okay with me!
Pink Tentacle - Crazy 'n cool stuff from (and related to) Japan. The entry about Polish posters for Japanese monster movies is a must-see!