More pairings are constantly being added to this list. ;D I ship each pairing on varying levels. Some I'm completely obsessed with, others I only mildly like.

Yaoi/Slash/Male x Male:

Roku x Sozin (Avatar: The Last Airbender)
Zuko x Sokka (Avatar: The Last Airbender)
Kevin x Ben (Ben 10: Alien Force)
Albedo x Ben (Ben 10: Alien Force)
JT x Cash (Ben 10: Alien Force)
Ichigo x Hichigo (Bleach)
Grimmjow x Ulquiorra (Bleach)
Ichigo x Ishida (Bleach)
Ichigo x Grimmjow (Bleach)
Nnoitora x Tesla (Bleach)
Cesare x Chiaro (Cantarella)
Jasdero x David (D. Gray Man)
America x England [Alfred/Arthur] (Hetalia Axis Powers)
America x Canada (Hetalia Axis Powers)
Germany x Northern Italy [Ludwig/Feliciano] (Hetalia Axis Powers)
Holy Roman Empire x Chibitalia (Hetalia Axis Powers)
Russia x America [Ivan/Alfred] (Hetalia Axis Powers)
Russia x Lithuania [Ivan/Toris] (Hetalia Axis Powers)
Poland x Lithuania (Hetalia Axis Powers)
Ancient Rome x Germania (Hetalia Axis Powers)
Prussia x Austria (Hetalia Axis Powers)
Sweden x Finland [Berwald/Tino] (Hetalia Axis Powers)
Xanxus x Squalo (Katekyo Hitman Reborn!)
Natsuo x Youji (Loveless)
Seimei x Nisei (Loveless)
Seimei x Soubi (Loveless)
Kakuzu x Hidan (Naruto)
Sasuke x Naruto (Naruto)
Sasori x Deidara (Naruto)
Kisame x Itachi (Naruto)
Hashirama x Madara (Naruto)
Kakashi x Obito (Naruto)
Pein x Naruto (Naruto)
Orochimaru x Kabuto (Naruto)
Itachi x Sasuke (Naruto)
Itachi x Shisui (Naruto)
Zabuza x Haku (Naruto)
Sakon x Ukon (Naruto)
Spirit x Stein (Soul Eater)
Giriko x Justin Law (Soul Eater)
Zero x Ichiru (Vampire Knight)
Kaname x Zero (Vampire Knight)
Kaname x Aidou (Vampire Night)

Heterosexual/Male x Female:

Sokka x Suki (Avatar: The Last Airbender)
Sokka x Toph (Avatar: The Last Airbender)
Sokka x Yue (Avatar: The Last Airbender)
Aang x Toph (Avatar: The Last Airbender)
Zuko x Mai (Avatar: The Last Airbender)
Zuko x Song (Avatar: The Last Airbender)
Zuko x Jin (Avatar: The Last Airbender)
Zhao x Azula (Avatar: The Last Airbender)
Jet x Katara (Avatar: The Last Airbender)
Ozai x Ursa (Avatar: The Last Airbender)
Kevin x Gwen (Ben 10: Alien Force)
Ben x Julie (Ben 10: Alien Force)
Ichigo x Orihime (Bleach)
Ichigo x Rukia (Bleach)
Ulquiorra x Orihime (Bleach)
Ishida x Orihime (Bleach)
Clare x Raki (Claymore)
Naruto x Hinata (Naruto)
Naruto x Sakura (Naruto)
Pein x Konan (Naruto)
Nagato x Konan (Naruto)
Jiraiya x Tsunade (Naruto)
Minato x Kushina (Naruto)
Soul Eater x Maka (Soul Eater)
Zero x Yuki (Vampire Knight)
Shiki x Rima (Vampire Knight)

Yuri/Femslash/Female x Female:
Azula x Ty Lee (Avatar: The Last Airbender)
Yoruichi x Soi Fong (Bleach)
Deneve x Helen (Claymore)
Teresa x Clare (Claymore)
Tsunade x Shizune (Naruto)
Sakura x Ino (Naruto)
Sakura x Karin (Naruto)
Maka x Chrona (Soul Eater)