My wife insisted last year that I watch Frogs, but I just couldn't generate enough interest to watch it. Then my daughter and I watched Lady Snowblood, and I'm all about campy B-movies. So this year my Shocktober will be a campfest.
Tremors (rewatch)
The Happening
Frogs
Evil Dead II
Army of Darkness (rewatch)
Dolls
The Brain that Wouldn't Die
The Little Shop of Horrors
Elvira, Mistress of the Dark
The Hand
I don't know how many I'll get to, but my daughter and I will try to watch as many as possible.