My collection:
Movies:
Alien (Sealed VHS, 1984 edition)
Alien (LaserDisc, Full-Screen)
Alien (Collector's Edition LaserDisc, Wide-Screen)
Alien (Sealed UMD)
Aliens (LaserDisc, Full-Screen)
Alien3 (VHS, Alien Trilogy Edition)
Alien3 (LaserDisc, Wide-Screen)
Alien: Resurrection (LaserDisc, Wide-Screen))
Alien Quadrilogy (DVD)
AVP: Alien vs. Predator (VHS, Full-Screen)
AVP: Alien vs. Predator (DVD, Wide-Screen)
AVP: Alien vs. Predator (DVD, Unrated Collector's Edition)
AVP-R: Aliens vs. Predator: Requiem (2-Disc Unrated Digital Copy Edition)
Predator (VHS, Full-Screen)
Predator (LaserDisc, Full-Screen)
Predator (2-Disc Collector's Edition DVD)
Predator 2 (VHS, Full-Screen)
Predator 2 (LaserDisc, Wide-Screen)
Predator 2 (2-Disc Collector's Edition DVD)
The Alien Legacy (VHS)
Books: (Mass-Market Softcover editions unless otherwise noted)
Alien by Alan Dean Foster
Alien by Alan Dean Foster (Book Club Edition Hardcover)
Aliens by Alan Dean Foster
Aliens by Alan Dean Foster (Book Club Edition Hardcover)
Alien3 by Alan Dean Foster
Alien3 by Alan Dean Foster (Audiobook performed by Lance Henriksen)
Aliens Book 1: Earth Hive by Steve Perry
Aliens Book 2: Nightmare Asylum by Steve Perry (Signed by Dave Dorman, w/Dorman original sketch)
Aliens Book 3: The Female War by Steve and S.D. Perry (Signed by Dave Dorman, w/Dorman original sketch)
Aliens: Genocide by David Bischoff (Signed by Dave Dorman, w/Dorman original sketch)
Aliens: Alien Harvest by Robert Sheckley
Aliens: Rogue by Sandy Schofield
Aliens: Labyrinth by S.D. Perry
Aliens: Music of the Spears by Yvonne Navarro
Aliens: Berserker by S.D. Perry
Aliens: Tribes by Steven Bissette and Dave Dorman (Hardcover, Signed by Dave Dorman)
Aliens: Original Sin by Michael Jan Friedman
Aliens: DNA War by Diane Carey
Aliens: Cauldron by Diane Carey
Aliens: Steel Egg by John Shirley
Aliens: Criminal Enterprise by S.D. Perry
Aliens: No Exit by B.K. Evanson
Aliens vs. Predator: Prey by Steve Perry and Stephani Perry
Aliens vs. Predator: Hunter's Planet by David Bischoff
Aliens vs. Predator: War by S.D. Perry
David Thomson on the Alien Quartet
Predator 2 by Simon Hawke
Predator: Concrete Jungle by Nathan Archer (UK Edition)
Predator: South China Sea by Jeff Vandermeer
Aliens Adventure Game by Leading Edge Games
Aliens vs. Predator: Prima's Official Strategy Guide
Cyberantics by Jerry Prosser (as Stan Mayakovsky) and Rick Geary
Comics:
Alien: The Illustrated Story
Aliens (Book II) (2,4)
Aliens: Earth War (1,2)
Aliens: Genocide (1,2)
Aliens: Colonial Marines (1,2,3,4,5,6,7,8,9,10)
Aliens: Hive (2,3,4)
Aliens: Rogue (1,3,4)
Aliens: Labyrinth (1)
Aliens: Music of the Spears (1,2,4) (All issues signed by cover artist Tim Bradstreet)
Aliens: Berserker (1,3,4)
Aliens: Newt's Tale (2)
Alien 3 (1,2)
Aliens: Kidnapped (1)
Aliens: Havoc (1)
Aliens: Survival (1)
Aliens: Mondo Heat
Aliens: Purge
Aliens: Earth Angel
Aliens: Lovesick
Aliens: Wraith
Aliens vs. Predator (1,2,3)
Aliens vs. Predator: Xenogenesis (1)
Green Lantern vs. Aliens (2,3)
Superman and Batman vs. Aliens and Predator (1,2)
Aliens/Predator/Witchblade/The Darkness: Mindhunter (2)
Judge Dredd vs. Predator (1,2)
Predator: Cold War (1,2,3,4)
Aliens Book One TPB
Aliens Omnibus Volume 1
Aliens Omnibus Volume 2
(As well as an assortment of Dark Horse Comics and Dark Horse Presents featuring Alien and Predator, including DHP#36 (The first AvP story) signed by cover artist Dave Dorman)
Soundtracks:
Alien (CD)
Aliens (Vinyl)
Aliens (CD)
The Alien Trilogy (CD)
Toys/Statues:
Palisades Alien Signature Series Statue (#1226 of 1500)
Kotobukiya 1:6 Scale AVP Grid Alien Vinyl Snap-Together Model Kit
Kotobukiya Predator 2 Chimasuta Wounded Predator
Palisades Aliens Interlocking Micro-Statue (#321 of 534)
Palisades Predator Interlocking Micro-Statue (#321 of 534)
Palisades Predator 2 Elder Predator Micro-Bust (Artist Proof # 29 of 90)
NECA 18" Classic Alien Figure
NECA 7" Classic Alien Figure
Medicom Alien 1979 Kubrick
Medicom Aliens x Kubrick Box Set
Includes Ripley, Powerloader, Queen, 3 Alien Warriors, and 4 Eggs
Medicom Alien Kubrick Series 1
Alien, Ripley in Nostromo Suit, Facehugged Kane, Parker, and Ash
McFarlane Movie Maniacs V Alien and Predator Box Set
McFarlane Toys 13" AVP Grid Alien Figure
McFarlane Toys Movie Maniacs Series 7 Colonial Marine Cpl. Hicks
McFarlane Toys AVP Birth of the Hybrid Deluxe Playset
Kenner Scorpion Alien
Kenner Gorilla Alien
Kenner Gorilla Alien (Kay-Bee variant)
Kenner Bull Alien
Kenner Lt. Ripley
Kenner Cpl. Hicks
Kenner Android Bishop
Kenner Deluxe Alien Queen
Kenner Deluxe ATAX Marine
Kenner Rhino Alien
Kenner Mantis Alien
Kenner Mantis Alien (Kay-Bee variant)
Kenner Panther Alien
Kenner Snake Alien
Kenner Wild Boar Alien
Kenner Deluxe Flying Alien Queen
Kenner Aliens vs. Marines 2-Pack: Vasquez vs. Night Cougar Alien
Kenner Alien Warrior (Kay-Bee variant)
Kenner Cracked Tusk Predator
Kenner Scavage Predator
Kenner Lava Planet Predator
Kenner Predator Blade Fighter Vehicle (Sealed in box)
Kenner Hive Wars Acid Alien
Kenner Action Masters Aliens 4-Pack:
Lt. Ellen Ripley
Classic Alien
Egg w/Facehugger
Queen Alien
Kenner Action Masters Predator
Kenner Alien Resurrection Battle-Damaged Alien
Wizkids AVP: Aliens Horrorclix Collector's Set:
Grid Alien
Acid-Tail Alien
Leaping Alien
Long-Tail Alien
Running Alien
Wall-Leaping Alien
Stalking Alien
Wizkids AVP: Alien Queen Horrorclix Collector's Set:
Egg Base
Alien Queen
Alien
Predator
Wizkids AVP: Predators Horrorclix Collector's Set:
Pole-Arm Predator
Martial Predator
Shuriken Predator
Raging Predator
Assassin Predator
Elder Predator
Apprentice Hunter
Palisades/Tree House Kids Aliens Deluxe Playset
Video Games:
Alien (Atari VCS/2600)
Alien 3 (SNES)
Alien 3 (Genesis)
Alien vs. Predator: The Last of His Clan (GB)
Alien vs. Predator (SNES)
Alien Trilogy (PSX)
Alien Resurrection (PSX)
Aliens vs. Predator (PC)
Aliens vs. Predator: Gold (PC)
Aliens vs. Predator: Extinction (XBX)
Predator: Soon the Hunt Will Begin (NES)
Misc:
HC Toys Alien Jigsaw Puzzle: Nostromo in Flight
SOTA Alien Wall Sculpture
Aliens vol. II (UK Magazine) issues 6,12,14,16,17
AVP:R Promo Movie Poster
Aliens: Colonial Marines Promo Poster
Aliens/Predator CCG Promo Poster/Playmat
Batman vs. Predator III Promo Poster
Dark Horse Deluxe Alien Chop (Jade)
Dark Horse Deluxe Predator Chop (Jade)
Alien 1979 Logo T-Shirt
Aliens Blue T-Shirt w/ Warrior
Marmit Japan Alien 25th Anniversary Egg Pod Sauce Holders
HOPE Operation: Aliens Alien Queen 5-Function Digital Quartz Watch
StarPics Alien 3 Collectible Cardart (79 of 80 cards, short card 55)
Aliens/Predator Collectible Card Game (334 of 360 cards, short 15 rares and 11 fixed cards for complete set)
I think that's everything. I'll post anything I've left out.
These pics are kind of old, so I've acquired some new stuff since then. Also, not everything is on display here.
EDIT: I left out one of my favorite pieces, the Cheetah Alien 3 Characteristick. It's a joystick for the Sega Genesis that's shaped like an alien. Even though its supposed to be an Alien 3 joystick, its a Cameron Alien. You can see it on the bottom left toy shelf.