Hmm... my favorite Japanese dramas? I need to mention 6.. I just can't take out one because they are all just so good..
1 litre of tears
Ninkyo Helper
Ikebukoro West Gate Park
Hanazakari no Kimitachi e
Last Friends
Maou
This list includes some sad, some serious, some heartwarming and also some light and funny dramas and they are all amazing in their own way.