Help me with horror movie filming locations in LA

I live in Vegas and I go to the LA area a lot, and I've always wanted to check out some "famous" horror filming locations. In a few weeks, I'm heading down and this time I'm going to take a day and do it.

I need some suggestions though, as I'm racking my brain trying to come up with some good ones.

What I'm definitely checking out already:

1. Nancy's house in Nightmare on Elm Street
2. All the houses from Halloween
3. The mall from Chopping Mall
4. The house from Six Feet Under (not horror, but it's a cool house)

Other than that, I am drawing a blank. Help?!