Here's a list of pairings I've liked over the years, meaning that the list will be a long one:

Pokemon
Satoshi x Kasumi
Kenji x Kasumi
Kojiro (James) x Musashi (Jessie)
Kosaburou (Butch) x Yamato (Cassidy)
Toru (Todd/Snap) x Imite (Duplica)

Gundam Wing
Heero Yuy x Relena Peacecraft
Quatre Raberba Winner x Relena Peacecraft (Gundam Wing)
Duo Maxwell x Hilde Schbeiker

Detective Conan
Edogawa Conan x Haibara Ai
Kudo Shinichi x Mouri Ran
Tsuburaya Mitsuhiko x Yoshida Ayumi
Takagi Wataru x Satou Miwako (This is pretty much canon now, imo, especially after chapter 673)

Sailor Moon
Kou Seiya x Tsukino Usagi
Kou Yaten x Aino Minako
Chiba Mamoru x Meioh Setsuna
Kumada Yuuichirou (Chad I think his name was) x Hino Rei
Urawa Ryo (Greg) x Mizuno Ami
Fiore x Chiba Mamoru
Kou Taiki x Mizuno Ami
Furuhata Motoki x Kino Makoto

Naruto/Naruto Shippuuden
Nara Shikamaru x Temari (Fav pair of the series)
Uzumaki Naruto x Hyuuga Hinata
Inuzuka Kiba x Hyuuga Hinata
Uchiha Sasuke x Haruno Sakura
Rock Lee x Tenten
Akimichi Chouji x Yamanaka Ino

Bleach
Hitsugaya Toushirou x Kurosaki Karin
Kurosaki Ichigo x Arisawa Tatsuki
Ishida Uryuu x Inoue Orihime
Jinta x Kurosaki Karin

Dragon Ball/Dragon Ball Z/Dragon Ball GT
Goku x Chichi
Trunks x Pan
Gohan x Videl

Digimon Adventure/Adventure 02/Tamers/Savers
Yagami Taichi x Takenouchi Sora
Ishida Yamato x Takenouchi Sora

Izumi Koushirou x Tachikawa Mimi (Ultimate fav pairing period)
Kido Jou x Tachikawa Mimi (Pretty much the only Jou pair I do like)
Michael x Tachikawa Mimi
Ishida Yamato x Tachikawa Mimi (One-sided; I like Yamato > Mimi)

Izumi Koushirou x Inoue Miyako (My favorite Miyako pairing)
Ichijouji Ken x Inoue Miyako (My fav Ken pairing)
Hida Iori x Inoue Miyako (I like it one-sided; Iori with a crush on Miyako)

Motomiya Daisuke x Yagami Hikari
Izumi Koushirou x Yagami Hikari (I like this pairing angsty and one-sided; Hikari > Koushirou)
Takaishi Takeru x Yagami Hikari (I kinda like this pairing very very angsty)
Ichijouji Ken x Yagami Hikari (I like this pairing one-sided; Hikari > Ken)

Takaishi Takeru x Ichijouji Ken (I like this angsty and one-sided more so; Takeru > Ken; also my fav)
Takaishi Takeru x Izumi Koushirou (Same as above, I really love this one one-sided lol; Takeru > Koushirou)
Takaishi Takeru x Yagami Taichi (Same as above lol; Takeru > Taichi)
Takaishi Takeru x Ishida Yamato (In an AU setting where they may be steps; one-sided; Takeru > Yamato)

Ishida Yamato x Motomiya Jun (In an ironic sense where it's Yamato > Jun)
Ishida Yamato x Inoue Chizuru

Lee Jenrya x Makino Ruki (Favorite for Tamers)
Akiyama Ryou x Makino Ruki
Shiota Hirokazu x Makino Ruki (I like it one-sided; Hirokazu > Ruki)

Noguchi Ikuto x Daimon Chika (Pretty much the only Savers pairing I do like)

Other
Tenchi x Ryoko (Tenchi Muyo)
Sohma Hatsuharu x Sohma Rin (Fruits Basket)
Spike Spiegel x Faye Valentine (Cowboy Bebop)
Ishikawa Goemon x Mine Fujiko (Lupin III)
Negi Springfield x Miyazaki Nodoka (Mahou Sensei Negima)
Sawada Shin x Yamaguchi Kumiko (Gokusen)
Knuckles x Rouge (Sonic X)
Tails x Cream (Sonic X)

Inuyasha:
Inu and Kagome

Vampire Knight:
Yuki and Zero

Chikane x Himeko

......what?

Couples
 

InuYasha:
InuYasha-Kagome
Miroku-Sango
Sesshomaru-Kagura

KamiChama Karin:
Kazune-Karin

Fruits basket:
Kyo-Tohru
Yuki-Machi
Kakeru-Kimi
(tho it pains me to say it, they do make a cute couple)Haru-Rin

That's all I can think of for now~Peace!:vsign:

*Nobora and Yushin from Crimson Hero
*Yuki and Zero From Vampire Knight
*Shikamaru and Temari From Naruto
*Candy and Anthony from Candy Candy (Must see anime to understand why 2 guys)
*Candy and Terry From Candy Candy

Cant really think of more right now:bigears:

Shinji- Asuka in Evangelion and Faye- Spike in Cowboy Bebop

Kouta and Lucy (Elfen Lied)
Watanuki and Dōmeki (xxxholic)
Nagisa and Shizuma (Strawberry Panic)

That would be my second favorite.

Yes! XD

Hardly watched Simoun though.