I only collect two comics/artists religiously: Paul Pope (THB) and David Mack (Kabuki).  Below are my collections, listed only for my own record keeping purposes...but thanks for looking anyway!

DAVID MACK:

Fear The Reaper--Act 1 (Caliber Press)
Dance Of Death Special #1 (London Nights)
Dance Of Death Commemorative Edition Gold (Comic Cavalcade)
Circle Of Blood trade paperback (Image)
Circle Of Blood 2nd edition trade paperback (Image)
Color Gallery Commemorative Edition Gold (Comic Cavalcade)
Color Special Commemorative Edition
Dreams Of The Dead (Caliber Press)
Dreams (Image)
Masks Of The Noh trade paperback (Image)
Skin Deep trade paperback (Image)
Gallery (Caliber Comics)
Kabuki 1/2 (Wizard/Image)
Kabuki 1/2 Special Edition (Wizard/Image)
Kabuki 1/2 reprint (Image)
Kabuki #1 (Image)
Kabuki #1 Jim Steranko alternate cover, autographed by David Mack #262 of 5000 (Dynamic Forces)
Kabuki #1 Dynamic Forces Exclusive alternate cover, autographed by David Mack #81 of 1500
Kabuki #2 (Image)
Kabuki #3 (Image)
Kabuki #4 (Image)
Kabuki #4 Alternate cover (Image)
Kabuki #5 (Image)
Kabuki #6 (Image)
Kabuki #7 cover 1 (Image)
Kabuki #7 cover 2 (Image)
Kabuki #8 (Image)
Kabuki #9 (Image)
Kabuki Metamorphosis hard cover (Image)
Kabuki Dreams hard cover (Image)--signed & numbered #427 of 500 w/sketch
Kabuki Agents: Scarab Ashcan black & white
Kabuki Agents: Scarab #1 Dynamic Forces Alternate cover #1464 of 2500
Kabuki Agents: Scarab #1 Quesada/Palmiotti/Mack cover (Image)
Kabuki Agents: Scarab #1 Mack/Rick Mays cover (Image)
Kabuki Agents: Scarab #1 Mack cover (Image)
Kabuki Agents: Scarab #2 (Image)
Kabuki Agents: Scarab #3 (Image)
Kabuki Agents: Scarab #4 (Image)
Kabuki Agents: Scarab #5 (Image)
Kabuki Agents: Scarab #6 (Image)
Kabuki Agents: Scarab #7 (Image)
Kabuki Agents: Scarab #8 (Image)
Kabuki Reflections #1 (Image)
Kabuki Reflections #2 (Image)
Kabuki Reflections #3 (Image)
Kabuki Images #1 (Image)
Kabuki Images #1 Wagner cover (Image)
Kabuki Images #2 (Image)
Kabuki Classics #1--Fear The Reaper (Image)
Kabuki Classics #2--Dance Of Death (Image)
Kabuki Classics #3--Circle Of Blood Act 1 (Image)
Kabuki Classics #4--Circle Of Blood Act 2 (Image)
Kabuki Classics #5--Circle Of Blood Act 3 (Image)
Kabuki Classics #6--Circle Of Blood Act 4 (Image)
Kabuki Classics #7--Circle Of Blood Act 5 (Image)
Kabuki Classics #8--Circle Of Blood Act 6 (Image)
Kabuki Classics #9--Masks Of The Noh Act 1 (Image)
Kabuki Classics #10--Masks Of The Noh Act 2 (Image)
Kabuki Classics #11--Masks Of The Noh Act 3 (Image)
Kabuki Classics #12--Masks Of The Noh Act 4 (Image)

Wizard #86 (Daredevil cover)
Marvel Knights Wave 2 Wizard Free Special Edition
McFarlane Toys 1999 Catalog
Kiss Special Wizard Edition
Vampirella Crossover Gallery #1 (Harris Comics)
Daredevil issues #9-25 (Marvel)
Swamp Thing issues #13-15 (DC)
Alias issues #1-5 (Max/Marvel)

Sketch Magazine Volume 1 #1 (David Mack interview)

Kabuki figures (original + 2 variants)
Kabuki statue
Kabuki masks: Scarab
                      Kabuki
                      Tiger Lilly
Kabuki t-shirts (black tattoo + white Scarab)
Kabuki posters/prints

PAUL POPE:

The Ballad Of Doctor Richardson 5th Year Edition trade paperback (Horse Press)
Sin Titulo trade paperback
THB free promo black & white (Horse Press)
THB #1 (Horse Press)
THB #1 Volume 2 (Horse Press)
THB #2 (Horse Press)
THB #3 (Horse Press)
THB #4 (Horse Press)
THB #5 (Horse Press)
THB: M3 #1--Mars' Mightiest Mek (Horse Press)
THB Circus (Horse Press)
Buzz Buzz Magazine #1 (Horse Press)
Escapo hardcover signed w/lithograph (Horse Press)
Pulp Hope 96/7 (Horse Press)
Heavy Liquid #1 (DC/Vertigo)
Heavy Liquid #2 (DC/Vertigo)
Heavy Liquid #3 (DC/Vertigo)
Heavy Liquid #4 (DC/Vertigo)
Heavy Liquid #5 (DC/Vertigo)
The One Trick Rip Off trade paperback (Dark Horse)

Gasp!
Negative Burn #12, 18, 20, 24, 25
Manga Surprise!
Rare Bit Fiends #9
Batman Chronicles #11
Will Eisner's: The Spirit--The New Adventures #7
Oni Double Feature #2 + 3
Batman: No Man's Land Gallery #1
JLA Gallery
Bone #36
The Dreaming #55
Weird Western Tales #1
100 Bullets #26
Pulp--The Manga Magazine August 2001, Vol. 5, #8
By The Balls
Five Shots & A Funeral

Indy Magazine #11 (Paul Pope interview)
Feature Magazine #2 (Paul Pope interview)
Comics Journal #191 + 192 (Paul Pope interviews, parts 1 & 2)

THB trading & promo cards
THB shirts (Lollie & Pigdog, HR Watson & her bike, HR Watson & her robot)