Okay, so my presence here is long overdue. I've had stuff to do this weekend, but I'm watching Air (the movie) so I'll go through my list of DVDs and list what I've enjoyed. Oh... I guess that'll end up being most of it with that ambiguous a requirement... I guess that'll make this list kind of useless for the purpose of finding anime you'd enjoy...
sweatdrop -Tenchi Muyo + the movies
-Tenchi In Tokyo
-Tenchi Universe (although it's my least favorite of these three)
-Magical Project S
-Sasami: Magical Girls Club (was alright)
-Akira
-Galaxy Angel (and its sequels: Z, A, AA, S, and X)
-Dual! Parallel Trouble Adventures
-Sister Princess
-Elemental Gelade
-This Ugly Yet Beautiful World
-Tactics (haven't finished yet)
-Gun Sword (was okay ; felt like it was missing something, though)
-Desert Punk
-King Of Bandit Jing
-Blue Gender
-Kaleido Star
-Fantastic Children
-Strawberry Marshmallow
-I My Me! Strawberry Eggs
-Hand Maid May
-Vampire Hunter D: Bloodlust
-Ceres Celestial Legend
-Revolutionary Girl Utena (haven't finished yet)
-Negima (and I've been enjoying Negima!?)
-His And Her Circumstances (although I'm not sure if I've finished it?)
-Sakura Wars
-Magic User's Club (haven't finished yet)
-Speed Grapher
-My-HiME
-My-Otome (I thought the series was kind of boring, but Zwei was nice)
-Tenjho Tenge (had some interesting aspects)
-Mythical Detective Loki Ragnarok
-Kodocha
-Princess Tutu
-Inu Yasha (I've seen six seasons, I think only the first movie)
-Ultra Maniac (haven't gotten far into it yet)
-Popotan
-UFO Ultramaiden Valkyrie
-Comic Party
-Angel Tales
-Hellsing (and Hellsing Ultimate, although I find the first more entertaining)
-Saint Tail
-Stratos 4
-I'm Gonna Be An Angel (can't finish)
-Please Teacher (and Please Twins)
-Gad Guard
-Karas (haven't finished it yet, though)
-Maze
-Eureka Seven
-Soultaker
-Nurse-Witch Komugi
-Corrector Yui (can't finish)
-Kannazuki No Miko
-Vandread
-Patlabor (the movie ; can't remember movie 2, haven't seen movie 3)
-Kamichu!
-Nanaka 6/17
-.Hack//Sign
-.Hack//Legend Of The Twilight Bracelet
-.Hack//Roots (kind of ; nothing really happened, though)
-Wolf's Rain
-Stellvia Of The Universe
-Tsukihime
-Elf Princess Rane (universal greeting used in the dub, heh)
-Kiddy Grade
-Maburaho
-Gunsmith Cats
-Gunslinger Girl
-Shingu: Secret Of The Stellar War
-Pretear
-Sorcerer Hunters
-Sorcerer On The Rocks
-Tokyo Underground
-Petite Princess Yucie
-Munto (+ Munto 2)
-My Dear Marie
-All Purpose Cultural Cat Girl Nuku Nuku
-Jungle De Ikou
-Grrl Power
-Metropolis
-Shamanic Princess (I think? Hard to remember ; I was moving / sorting DVDs)
-Ghost In The Shell (+ SAC + SAC2 + SAC SSS)
-Ruin Explorer
-E's Otherwise
-Yumeria
-3x3 Eye2
-Key: The Metal Idol
-Scrapped Princess
-Burst Angel
-S-Cry-ed
-DearS
-Midori Days
-Spiral
-Melty Lancer (admittedly, can't remember too well)
-Fruits Basket
-Steel Angel Kurumi
-Haibane Renmei
-Hare And Guu
-Infinite Rivius
-DNA^2
-Gate Keepers (+ Gate Keepers 21)
-Kiki's Delivery Service
-Pom Poko
-Nausicaa Of The Valley Of The Wind
-Princess Mononoke
-Howl's Moving Castle
-Castle In The Sky
-My Neighbor Totoro
-Porco Rosso
-Spirited Away
-The Cat Returns
-Bottle Fairy
-Petite Cossette
-Photon: The Idiot Adventure
-Gestalt
-Roujin Z
-Steamboy
-Memories
-The Weathering Continent
-Appleseed (Movie + Sequel)
-Legend Of Himiko
-Genocyber (although the most disgusting thing I've ever seen, too.)
-Ghost Talker's Daydream (I think?)
-Interlude
-Kyo Kara Maoh (seasons 1 and 2)
-Girls Bravo
-Slayers (not all of it, but quite a lot)
-Hanaukyo Maid Team (+ some of La Verite)
-Doki Doki School Hours
-Fullmetal Alchemist
-Risky Safety
-Full Metal Panic
-Rune Soldier
-The Twelve Kingdoms
-Blue Seed
-Marmalade Boy
-Crest Of The Stars + Banner Of The Stars
-Outlaw Star
-Sailor Moon
-Witch Hunter Robin
-Gokudo (haven't finished)
-Seraphim Call (haven't finished)
-Kurogane Communication (gay terminator! BWAHAHAHAHA)
-Martian Successor Nadesico
-Avenger
-Oh! My Goddess (and the various Ah! My Goddess)
-Samurai 7
-El Hazard
-Real Bout High School
-Di Gi Charat
-Chrono Crusade
-Trigun
-Blue Sub 6
-Neon Genesis Evangelion
-Cowboy Bebop
-Love Hina
-Serial Experiments Lain
-Voices Of A Distant Star
-The Place Promised In Our Early Days
-5 Centimeters Per Second
-Excel Saga + Puni Puni Poemy
-Azumanga Daioh
-Figure 17
-Escaflowne
-Jubei-chan
-Brain Powered (oddest location for a mecha cockpit)
-Mahoromatic
-Elfen Lied
-FLCL
-Amazing Nurse Nanako
-Ground Defense Force Mao-chan
-Magical Meow Meow Taruto
-Now And Then, Here And There
-Wandaba Style
-Brigadoon
-Geneshaft
-Saikano
-Divergence Eve
-Last Exile
-The World Of Narue
-R.O.D. + R.O.D. TV
-Chobits
-Cardcaptor Sakura
-Angelic Layer
-Magic Knight Rayearth
-Najica Blitz Tactics
-Seven Of Seven
-Argentosoma
-Saber Marionette J (I suppose)
-Full Moon Sagashite
-Jinki: Extend (I think. Had trouble following)
-Shana
-Don't Leave Me Alone Daisy (had to get beyond the first episode, though)
-Trinity Blood
-Gankutsuou
-Gungrave
-Ghost Stories
-Ninja Nonsense (pacman was annoying, though)
-Wild Cardz
-They Were Eleven
-Soul Hunter (haven't finished)
-Noein (reminds me of Chipotle, though)
-A Tree Of Palme (somewhat)
-Moon Phase
-Kirameki Project
-Guyver
-Ergo Proxy
-Dragon Ball Z
-Gundam Wing
-Gundam Seed
-Colorful
-Grenadier
-Alien Nine
-Bleach
-Grave Of The Fireflies
-Paniponi Dash
-The Melody Of Oblivion
-Black Cat
-Fate / Stay Night
-Disgaea
-Mouse
-Best Student Council
-Solty Rei
-Utawarerumono
-Queen Emeraldas
-Coyote Ragtime Show
-Air Gear
-Origin: Tales Of The Past
-Ikki Tousen
-X (not finished)
-Astro Boy (bits and pieces)
-Kurau: Phantom Memories
-Black Lagoon
-Afro Samurai
-Reservoir Chronicles Tsubasa + xxxHolic
-Samurai Horror Tales (although the last story was the best)
-Fushigi Yugi (although I've only seen so little.
sad )
-Rozen Maiden
-Karin
-Naruto
-Tokko (despite crappy ending)
-The Melancholy Of Haruhi Suzumiya
-When They Cry
-Mar
-Suzuka (to some degree)
-Kashimashi (to some degree)
-009-1
-Shonen Onmyouji
-Mushi-shi
-Space Pirate Mito + Aoi & Mutsuki: A Pair Of Queens
-The Third
-School Rumble
-Saiunkoku
-Air
-Xenosaga
-Witchblade
-Starship Operators
-Ramen Fighter Miki
-Zegapain
-Glass Fleet (Although... something felt off about it?)
-Hell Girl
-Phoenix
-Venus Versus Virus (despite crappy ending)
-Simoun
-Fighting Fairy Girl; Rescue Me Mave-Chan
-Blade Of The Phantom Master
-Mars Daybreak
-Death Note
-Paprika
-Magikano
-Dragon Half
-Ragnarok: The Animation
-Ai Yori Aoshi (to some degree)
-Tokyo Majin
-The Wallflower
-Princess Princess
-Star Ocean EX
-Kanon
-Big O
-Devil May Cry
-Shuffle
-Black Blood Brothers
-Blood+ (have only seen the ending to the movie, though)
-Strawberry Panic
-Project Blue Earth SOS
-Basilisk
-Tweeny Witches
-Oban Star-Racers (if you consider it to be anime)
-Y's Legacy
-Prince Of Tennis
-Buso Renkin
-Lucky Star
-Kujibiki Unbalance
-Baldr Force EXE
-Shattered Angels
-Mirage Of Blaze
-Beast King Golion (to some degree)
-Pokemon (although I've see surprisingly little)
-Aika
-Gao-Gai-Gar
-Cosplay Complex
-Otoboku
-Gurren Lagann
-Toward The Terra
-Case Closed (aka Detective Conan)
-One Piece
-Code Geass
-eX-Driver
-Dead Leaves
-Perfect Blue
-Genshiken
-Urusei Yatsura
-Chance Pop Session
-Samurai Champloo
-Millenium Actress
-Tokyo Godfathers
-Otaku No Video
-Overman King Gainer
-Hakugei: The Legend Of Moby d**k
-To Heart
-Blue Dragon
-Neo Tokyo
-Bludgeoning Angel Dokuro-Chan
-Strait Jacket
-Claymore
-Ghost Hunt
-Jyu-Oh-Sei
-Bakugan Battle Brawlers
-Aria The Animation
-Ouran Highschool Host Club
-Rocket Girls Complete Collection
-Magical Witch Punie-Chan
-MAPS
-Night Head Genesis
-The Familiar Of Zero
-Moribito
-The Girl Who Leapt Through Time
-My Santa
-Darker Than Black
-Princess Minerva
-Magical Girl Lyrical Nanoha
-Hunter X Hunter
-Gunparade March
-Eden's Bowy
-Final Fantasy Unlimited
-Kino's Journey Thin
-DNAngel
-Magical Shopping Arcade Abenobashi
-Those Who Hunt Elves
-Neo Ranga
-Wild Arms
-Happy Lesson
-Yu Yu Hakusho
-Get Backers
-Gravion
-Ranma
-Madlax
-Great Teacher Onizuka
-Godannar
-Goldenboy
-Megazone 23
-IGPX
-Saiyuki
-Gantz
-Mezzo: Danger Service Agency
-Macross
-Pumpkin Scissors
-Red Garden
-Bubblegum Crisis Tokyo 2040
-Welcome To The NHK