Cool idea, OP!
What do I like? Lots of stuff, actually... (in alphanumerical order)
1980s/Cyberpunk Culture
Aircrafts (Ace Combat's X-02 Wyvern & ADFX-01 Morgan, B-1B Lancer, B-52 Stratofortress, C-130 Hercules & AC-130 Gunship, F-16XL Delta Falcon, Stargate's F-302 Hybrid Interceptor, STEALTH's F/A-37 Talon, Su-30MKI Terminator, Su-47 Berkut, Tom Clancy's A-20 Razorback, X-44 MANTA,F/A-22 Raptor)
Aliens
Alternate History/Universe
American Akitas
Anime
Antiheroes, Antiheroines, Antivillains, Protagonistic Villains
Apocalyptic & Post-Apocalyptic Dystopia
Bloodplay / Hematolagnia (AKA sexual pleasure derived from involving blood)
Chaos Theory / Butterfly Effect
Chinese Shar Peis
Coonhounds
Cougars
Coyotes
Demonology
Dragons
Exotic Foods
Genetic Experimentation
Great Pyrenees
Hentai (Yuri preferably)
Hybristophilia (AKA sexual pleasure derived from involving criminals)
Hyenas
Komodo Dragons
Lycanthropy
Martial Arts
Music (Hardrock & Metal more than anything)
Pariahs
Rottweilers
Sadism (well, if you know what I mean...)
Salirophilia (AKA sexual pleasure derived from involving dirtying up partner)
Science Fiction
Seafood
Singularitarianism
Snakes
Spicy Foods
Street Fighting
Sushi
Tarantulas
Technology
Tequila
Transhumanism
Underground/Criminal Culture
Vampirism
Vodka
Video Games (Action, RPG, Flight, Survival, Adventure, or just anything non-platforming really)
Wolves
Zombies
Edit: well hell, here we go... more specific examples since others have done so -
28 Days/Weeks Later
Aaliyah D. Haughton (Aaliyah)
Ace Combat Franchise
Alice Cooper
Alice in Chains
Alien Franchise (inc. Prometheus)
Alvin Joiner (Xzibit)
An American Werewolf in London/Paris
Appleseed
Armitage III (Armitage)
Armored Core Franchise
Artis Ivey Jr. (Coolio)
Ayumi Hamasaki
Babylon A D
Black Sabbath
Blade Franchise
Blade Runner
Blood Stain Child
Bloody Mary (Vodka Drink)
Blue Gender (Marlene)
Bon Jovi
Bruce Lee
Bruce Willis
Chris Rock
Clifford Smith (Method Man)
Clint Eastwood
Daybreakers
Def Leppard
Delerium
Dennis Rodman
Denzel Washington
Dragon Rolls
Drowning Pool
Earl Simmons (DMX)
Escape from NY/LA
eXistenZ
Fahrenheit 451
Fast & Furious Franchise
Final Fantasy Franchise (Squall [VIII], Rinoa [VIII], Yuna [X], Lightning [XIII], Fang [XIII], Cecil [IV], Raubahn [XIV], Ifrit, Shiva, Diabolos, Bahamut, Anima)
Forever Knight
Ghost in the Shell Franchise
Gojira
Grand Theft Auto Franchise
Green Day
Guns N Roses
Hed P E
I Am Legend
I, Robot
Interview with a Vampire
Iron Maiden
Jade Villalon
James Smith (LL Cool J)
Jackie Chan
Jason Bourne
Jason Statham
Jet Li
Jimi Hendrix
Jiu-Jitsu
Joan Jett
Judge Dredd
Kenny Wayne Shepherd
Koda Kumi
Led Zeppelin
Linkin Park
Logan's Run
Lynard Skynard
Mad Max
Marilyn Manson
Meatloaf
Megadeth
Metal Gear Solid Franchise (Solid Snake, Big Boss, Raiden, & The Boss)
Michelle Rodriquez
Mickey Rourke
Milla Jovovich
Mobile Suit Gundam Wing (Epyon, Wing Zero, Deathscythe, & Wing Zero Custom)
Mongolian Beef
Muay Thai
NFS Underground & Most Wanted Series
Nickelback
Nightwish
Nine Inch Nails
Noein
O'Shea Jackson (Ice Cube)
Onmyouza
Ozzy Osbourne
Pantera
Peta Nemcola
Pink Floyd
Poison
Pokemon RPGs only
Predator Franchise
Prototype (Alex Mercer)
Puddle of Mudd
Queen
Queen's Blade
Rattlesnake Blood Drink
Red Dead Redemption
Red Hot Chili Peppers
Resident Evil Franchise (Jack Krauser, Leon Kennedy, T-Virus, G-Virus, Tyrant, & Ada Wong)
Revolutionary Girl Utena
Rob Thomas
Rob Zombie
Rolling Stones
Saliva
Samuel L Jackson
Santana
Screwdriver (Vodka Drink)
Sean Connery
Seether
Sepultura
Shania Twain
Shin Megami Tensei Franchise
Simoun
Sirenia
Skid Row
Sleeping Dogs
Slipknot
Spinnerette
Star Trek Franchise
Stargate Franchise
Sublime
Sylvester Stallone
System of a Down
Tequila Sunrise (Tequila Drink)
Tera
The Blood of Heroes
The Book of Eli
The Chronicles of Riddick Franchise
The Matrix
Third Eye Blind
Three Days Grace
Toby Keith
Tokyo Requiem
Tommy Lee Jones
Trace Adkins
Trinity Blood
Twisted Sister
Ultraviolet
Umineko
Underworld
Van Halen
Vin Diesel
Virus 1980 & 1999
Weird Al Yankovic
Wesley Snipes
Whitesnake
Will Smith
Within Temptation
Wolf's Rain
X/1999
Yakuza Franchise
Yu-Gi-Oh Franchise
Zoids