Non-MG stuff?
Kare Kano (Yukino & Arima)
Kimi ni Todoke (Sawako & Kazehaya)
Urusei Yatsura (Lum & Ataru)
Maison Ikkoku (Godai & Kyoko)
Kyo Kara Maoh (Yuuri & Wolfram)
oh jeezus don't get me started on how much i love YuuramKeroro Gunso (Keroro + Tamama)
(context? what context?)
Macross (Hikaru + Misa)
Kaze to Ki no Uta (Serge + Gilbert)
Actually, Gilbert, Serge and Keiko Takemiya's backgrounds are my OT3.