Since some relatively new ones have been brought up here, I'd like to suggest some old (not too old) ones.
Ningen Shikkaku(Disqualified Human) which features young (15yo/16yo)Kinki Kids as main casts. It's a school drama and a lot of the modern school and parental problems are questioned in it. A boy who is performed by Tsuyoshi enters a junior high school which is famous for great academic records where he faces catastrophic bullying from standing for a student who was previcous the target of the class bullying. His father runs a ramen shop and has a lot of trouble making ends meet as he's in red for just having started the business in Tokyo(?) after moving from Kobe. Makoto (the boy Tsuyoshi performs)'s mother died and his father married another woman who is much younger than his previous wife. Makoto and his mother-in-low aren't getting alonge well as Maokoa is still struggling coming terms with the death of his biological mother. That's the background of the story. When it was first broadcasted, it caused a lot of controversy in Japan as the bullying against Makoto was so harsh and evil that many parents who watched it called or wrote to TBS (the network which broadcasted the drama) criticizing the drama for its negative effects on their kids. I myself was 15 at that time found some of the scenes too cruel to watch without putting my hands on my eyes. Makoto has to hande more than bullying from his classmates. The student (performed by Koichi) whom Makoto thought could be his best friend betrays him (well he is actually trapped into doing so by the teacher who is in love with him and is jealous of Maokoto for his friendship with the boy(Ruka).
Anyways, this is the way the drama goes on. If you can bear some tragic scenes, this could be an excellent one to watch. I rate it as the all time best cuz it presents so many themes our society still now is working on.
If you want to know more about it and its story line, I will be glad to help you.