Welcome to Imagination Unlimited, a Website devoted to my writing.  Now at Amazon and Smashwords:  The Deep Dark Well (far future science fiction), The Hunger (vampire Avenger in Sunny Tampa) and The Scorpion (uploaded terrorist threatens the world).  The Shadows on the Multiverse (creatures from another dimension threaten the Universe).   On the site, free eBooks Diamonds In The Sand and Doppelganger: A Novel Of Refuge.
Follow Me!
Lesser Undead
Not sure if the Mummy would agree with this label (mummy's always seemed to be arrogant bastards, I guess since they had been royalty in the past).  This catagory includes all of the undead that are not Vampires.  Zombies, Ghouls, Mummies, and Wights, these encompass all the rotting and disgusting creatures that should have remained in the grave and didn't.  I guess ghosts and other entities that don't have physical forms might also be included, as well as other creatures such as Wraiths.  Some can wander at will, with the little bit of will that they possess.  Others are restricted to a certain place or time.
Zombie:  Wikipedia article about the undead, including vodoo.
How Zombies Work:  Not really sure they do, but this is the How Stuff Works Article.
Zombies on the Web:  Not just the undead kind, but yeah, mostly.
Zombies!!!Second Edition:  By Twilight Creations.  At least you don't have to smell their putrid hides.
Zombieplace:  A site of the Zombie Apocalypse.
All Things Zombie:  Your Zombie Resource Site.
Zombies:  From Monstrous.com.
Preparedness 101:  Blog from the CDC about preparing for the Zombie Apocalypse.
Zombie Infection Simulation: v2.3 - The Original.
List of Zombie Films:  On Wikipedia.
Top 25 Zombie Movies: Of All Time at Boston.com.
XZOMBI:  Zombie Movie Database:  If it's Not not dead, we've got it.
Fright Flicks:  Not just Zombies, but Vampires and others too.
The Walking Dead:  Great Series from AMC.
Zombies in Literature:  From Zombie Rama.
Undead Skeletons: at Wikipedia.  Just Zombies without the flesh?
Ghoul:  Wikipedia article about the grace robbing undead.
Ghouls: From Monstrous.com
Ghost:  Wikipedia Article.
Ghosts: At Ghoststudy.com, the Biggest Free Ghost Photo Site On The Web.
Ghost Videos:  Part of the paranormal network.
Zombify Yourself!:  Turn your own photo into an animated monster to post on the internet.
The Shadowlands:  Ghosts and Hauntings.
Haunted Places Directory:  Listing and stories about so called haunting sites.
List of Ghost Films: On Wikipedia.
Scariest Ghost Movies:  Horror and Haunted House Films.
Top 10 Ghost Stories:  By Peter Washington at guardian.co.uk.
Wraiths:  From Wikipedia.  Maybe not lesser undead, but still not in the class of Vampires.
Nazgul:  The Ring Wraiths from Lord of the Rings.
Wights:  From Wikipedia, from the old English and High German.
Barrow Wights:  From the Tolkien Gateway.
The Barrow Wights:  The Tolkien Wiki Community take on this monster.
Mummy:  The Real Thing, and they don't walk, I hope.
Mummies of Ancient Egypt:  Site about the real thing.
The Mummy: Trailer from Hammer Horror, on Youtube.
How Mummies Work:  From How Stuff Works.
Mummy-Undead: At the Demon Hunter's Compendium.
A Massive Mummy Movie Filmography: At Tor.com.
Mummy Movie Trailers:  Several of the old ones, on Youtube.
The Essential Guide to Mummy Literature:  From the Journal of the Fantastic.