Everything listed here right now is commercial, and many are availiable for preorder/sale here.

AD Police (Classic) - AnimEigo
AD Police (New) - ADV
Ah My Goddess TV - Geneon
Ah My Goddess OVA - AnimEigo
Ah My Goddess Movie - Geneon
AIRZONE Solution, The - ?
AWOL - Bandai
Adieu, Galaxy Express 999 - Viz
Adventures of Kotetsu - ADV
Agent Aika - CPM
Ai City - Right Stuf
Ai Mai Mi! Strawberry Egg - Geneon
Ai Yori Aoshi - Geneon
Ai Yori Aoshi Enishi - Geneon
Akai Hayate - CPM
Akira - Geneon
Alexander - Tokyopop
Alien 9 - CPM
All Purpose Cultural Cat Girl Nuku-Nuku (all) - ADV
Amon Saga - Manga Ent
Angel Cop: The Movie - Manga Ent
Angel Links - Bandai
Angel Sanctuary - US Manga
Angel's Egg - Anchor Bay
Angelic Layer - ADV
Angels in the Court - Nutech
Animated Classics of Japanese Literature - CPM
Appleseed OVA - Manga Ent
Appleseed Movie - Geneon
Aquarian Age - ADV
Aquarian Age 2 - Synch-Point
Arc the Lad - ADV
Arcade Gamer Fubuki - CPM
Arcadia of My Youth - ?
Area 88 - CPM
Argent Soma - Bandai
Ariel Deluxe - CPM
Ariel Visual - CPM
Armagedon - Manga Ent
Armitage III - Geneon
Art of Fighting - CPM
Assemble Insert - Right Stuf
Astro Boy 30th Ann. - Right Stuf
Astro Boy - Right Stuf
Aura Battler Dunbine - ADV
Avalon - Miramax
Ayane's High Kick - CPM
Ayashi no Ceres - Viz
Azumanga Daioh TV/Movie - ADV

==ADULT SECTION (18+ ONLY)- shop here

Abashiri Family - ADV
Advancer Tina - Kitty
Adventure Kid - Anime 18
Akiko - SoftCel
Alien from the Darkness - Kitty
Angel of Darkness - SoftCel
Angels in the Court - NuTech
Anime Fiction - ?
Apocalypse Zero - Media Blasters
Autumn Heat - Kitty


Or you can go to the alphabet choice here.
And there's always HOME...