Kimi Wa Petto...Matsumoto Jun!!
Long Vacation! Kimutaku!
you are beautiful japenses versian
1 Liter of Tears (watched back in 2007) ... I cried a ton  and had long conversations about the drama with my friends.

:)
Hana yori dango 
I think it was Gokusen. But I'm not really sure, that was nearly 10 years ago !
I believe my was Gokusen
Death Note movies :)
One of my first drama series that I watched was Lone Wolf and Cub....before that movies by Kurosawa....didn't find other Asian dramas until about 10 years, ago, and been an addict ever since.... 
I can't remember if it was Nodame Cantabile or Hana Yori Dango
Otomen or At home dad, both were recommended to me by my Japanese teacher at the time.