The books Laurell K. Hamilton is most known for are the Anita Blake: Vampire Hunter series & the Meredith Gentry series. Her first published novel was Nightseer. Listed below is a complete as possible bibliography.
Anita Blake: Vampire Hunter Series
1. Guilty Pleasures (1993)
2. The Laughing Corpse (1994)
3. Circus of the Damned (1995)
4. The Lunatic Cafe (1996)
5. Bloody Bones (1996)
6. The Killing Dance (1997)
7. Burnt Offerings (1998)
8. Blue Moon (1998)
9. Obsidian Butterfly (2000)
10. Narcissus in Chains (2001)
11. Cerulean Sins (2003)
12. Incubus Dreams (2004)
13. Micah {novella} (2006)
14. Danse Macabre (2006)
15. The Harlequin (2007)
16. Blood Noir (2008)
17. Skin Trade (2009)
18. Flirt {novella} (2010)
19. Bullet (2010)
20. Hit List (2011)
21. Kiss The Dead (Coming June 2012)
Marvel Comics series
1. Laurell K. Hamilton's Anita Blake, Vampire Hunter: The First Death 1-2 (7 & 12/2007)
2. Guilty Pleasures Handbook (2007)
3. Anita Blake Vampire Hunter: Guilty Pleasures 1-12 (12/2006-8/2008)
4. Anita Blake: The Laughing Corpse – Animator 1-5 (10/2008-2/2009)
5. Anita Blake: The Laughing Corpse – Necromancer 1-5 (4/2009-9/2009)
6. Anita Blake: The Laughing Corpse – Executioner 1-5 (9/2009-3/2010)
7. Anita Blake: Circus of The Damned – The Charmer 1-5 (5/2010-10/2010)
8. Anita Blake: Circus of The Damned – The Ingenue 1-5 (1/2011-Ongoing)
Merry Gentry Series
1. A Kiss of Shadows (2000)
2. A Caress of Twilight (2002)
3. Seduced by Moonlight (2004)
4. A Stroke of Midnight (2005)
5. Mistral's Kiss (2006)
6. A Lick of Frost (2007)
7. Swallowing Darkness (2008)
8. Divine Misdemeanors (2009)
Others
Nightseer (1992)
Nightshade (1992) (Star Trek: The Next Generation authorized novel #24)
Death of a Darklord (1995) (TSR's Ravenloft series.)
"A Clean Sweep" (first story in Superheroes, a 1995 anthology)
Cravings (anthology, 2004)
Bite (anthology, 2004)
Strange Candy (14 published and unpublished short stories, released November 2006)
Never After (anthology, 2009)
There are also several anthology versions of the Anita Blake books, in the form of Science Fiction Book Club omnibus versions. These are:
Club Vampyre (Guilty Pleasures, The Laughing Corpse, and Circus of the Damned)
Midnight Cafe (The Lunatic Cafe, Bloody Bones, and The Killing Dance)
Black Moon Inn (Burnt Offerings and Blue Moon)
Nightshade Tavern (Obsidian Butterfly and Narcissus in Chains)