Bijo ka Yajuu [美女か野獣] Rating: 6/10 (Watched) Bijo ka Yajuu is entertaining, but it's not a top-tier J-drama. I would find it mediocre at best, were it not for the fact that Matsushima Nanako stars in it :D
GTO [麻辣教師] Rating: 9/10 The first J-drama I ever watched, and it's still one of my favorites. Suprisingly, Sorimachi Takashi is able to convincingly play an anime character in a live-action drama, complete with conventional anime-like mannerisms intact. Also, Matsushima Nanako co-stars :D
Long vacation [ロングバケーション] Rating: 8/10 (Watched) Very entertaining, with the best J-drama soundtrack I've heard so far.
Summer snow Rating: 9/10 (Watched) Perhaps less sensationalistic situations than other dramas, the performances from every cast member sell the show, especially Ikewaki Chizuru's Chika.