Here's a yearend ranking from Goo Ranking with the best drama couples of 2009.
1. Yamashita Tomohisa (NEWS) * Keiko Kitagawa -- Buzzer Beater
2. Mizushima Hiro * Eikura Nana -- Mei-chan no Shitsuji
3. Hiroshi Tamaki * Nose Karina -- Love Shuffle
4. Matsumoto Jun * Aragaki Yui -- Smile
5. Kimura Takuya * Ayase Haruka -- Mr. Brain
Just took the top 5, the rest could be found here (names are still in Kanji though).