Here's a complete checklist of Jeff's comic book output.

Angel: Masks

Angel: Old Friends #1-5

Angel: The Curse #1-5

Backlash #1-11 (co-writer)

Countdown #1-8
Art by Aaron Lopresti and Randy Emberlin

CSI: Thicker Than Blood
Art by Gabriel Rodriguez and Ashley Wood

CSI Miami: Smoking Gun
Art by Jose Aviles and Ashley Wood

CVO: Covert Vampiric Operations--Artifact #1-3.
Art by Gabriel Hernandez

CVO: Covert Vampiric Operations TPB
Art by Gabriel Hernandez

CVO: Covert Vampiric Operations--Human Touch
Art by Gabriel Hernandez

CVO: Covert Vampiric Operations--Rogue State #1-5.
Art by Antonio Vazquez

Deadlands: Black Water
Art by Brook Turner

Deadly Duo #2 (second series)

Deathblow #24

DefCon 4 #1-4

DefCon 4 #1/2 (for FAN Magazine)

Desperadoes #1-5 (collected as Desperadoes: A Moment’s Sunlight)
Art by John Cassaday

		(second printing)

Desperadoes: Epidemic!

Desperadoes: Quiet of the Grave #1-5
Art by John Severin

Desperadoes: Quiet of the Grave trade
Art by John Severin

There's an interview which talks a bit more about the book here.

Desperadoes: Banners of Gold #1-5
Art by Jeremy Haun,
issue 1 cover by John Cassaday, issue 2 cover by Alex Garner,
issues 3-5 covers by Jeremy Haun

Desperadoes: Buffalo Dreams #1-4
Art by Alberto Dose

Read an unpublished Desperadoes script here!

Fade to Black #1-#5

Art by Daniele Serra

Garrison #1-#6

Art by Francesco Francavilla

Gen13 #2 (miniseries) -- script

Gen13 #55, 56

Gen13 Bootleg #14
Art by Joe Phillips and Garry Leach

Graveslinger #1-5
With Shannon Eric Denton
Art by John Cboins

Hazard #1-7

Jim Lee’s C*23 #1-8

No Justice, No Peace #2: Younger & Lachance: Wildife Agents

Presidential Material: Barack Obama

Romantic Tails #1: 28 Flavors (with Maryelizabeth Hart)

Terminator: Salvation, Art by Don Figueroa

The Shield: Spotlight #1-5.
Art by Jean Diaz and Vinicius. Painted cover by Tommy Lee Edwards

The Shield: Spotlight TPB
Art by Jean Diaz and Vinicius.

StormWatch #27-29

StormWatch Sourcebook

Union #2 (miniseries) -- script

WetWorks/Vampirella

WildC.A.T.S #9: The Bonds of Blood and Steel

WildC.A.T.S Adventures #1-7, 9, 10

WildC.A.T.S. Adventures Sourcebook

WildC.A.T.S. Sourcebook

Wild Times: WildC.A.T.S (for Wizard Magazine)

WildStorm's Chamber of Horrors (Savant story and frame)

Zombie Cop
(for Image Comics/Shadowline) with fully painted art by Szymon Kudranski, lettered and designed by Brant Fowler.

Unless otherwise noted, comics are ®, TM and © WildStorm Productions, an imprint of DC Comics. Deadly Duo TM and © Erik Larsen. Romantic Tails and No Justice, No Peace TM and © Head Press. CSI and CSI: Miami are TM and © CBS Worldwide, Inc. and Alliance Atlantis Productions. CVO is TM and © Idea and Design Works, LLC. Desperadoes is TM and © Jeffrey J. Mariotte and Idea + Design Works, LLC. The Shield is TM and © 20th Century Fox Film Corporation.Angel TM and © Twentieth Century Fox Film Corporation.