I enjoy watching Jdorama's so now and then, and my favourite is without any doubt:
Ikebukuro West Gate Park! problem is, not a lot of guys know this drama.
Ooooh my favourite, too! I've just started re-watching it yesterday but today,
Tengoku ni ichiban chikai Otoko arrived and new things first... That being said, after posting this I'll go watch it
About being too dramatic, I agree in case you mean over-acting and exaggerated music and stuff as in Gokusen (kept ticking me off till the very last episode of the 3rd season.. bigass good-will-prevail music, Yankumi loosening her hair, walking "Watashi? Watashiwa, koitsura no tannin no sensei dayo", almost EVERY DAMNED EPISODE

), but what I do like about Japanese dramas like
IWGP (especially the gut-wrenching last episode and Takashi's break-down) and
Byakuyakou, is that they're not as dull as many Western dramas, but still just as entertaining.
I've watched:
IWGP 
(greatly inspired me concerning filmmaking)
Mukodono 2003 (I thought it was an interesting series if you want a look behind the scenes of the geinoukai, but I quickly changed my mind. It's bull)
Long Love Letter (really made me want to preserve the environment)
Mou ichidou kiss (for cast fans only IMHO... Kubosuke: gorgeous!)
Strawberry on the Shortcake (horrible love-triangle-cheesiness, only bearable for fans of the cast)
Wakaba no koro (interesting & memorable, but Kubozuka's part is too small IMHO)
Gokusen 1,2,3 (great values vs. horrible directing & music, hmmm... plus, Yankumi's fighting scenes were ridiculous, it was just too obvious that there was no force in her hands when she hit a dude, she didn't even bother to tighten up, all she did was imitate movements from some fight choreographer or worse, cartoons)
Byakuyakou (depressing..)
Omiai Kekkon (Kubozuka is hilarious, especially as he contemplates suicides with 2 bullpens up his nose, but the rest is boring IMO)
Zettai Kareshi (not memorable IMO, the main character had a horrible actor)
Vampire Gigolo (but only the first 3 or 4 episodes because it was just too embarrassing to watch, an insult to decent directing and SFX)
GTO (disappointing when you know the manga... Onicchi wasn't even bleached, and a kick to the head doesn't make the same impression as a German Souplex. He was Mr Speech, not Mr Goodhearted *****)
Dragon Zakura (loved this one, so much better than GTO if you choose a non-violent teacher anyways)
One litre of tears (that's about the same as what I shed watching this. This drama made me feel a bit better about my own life because I'm almost 25, Aya died at that age after years of severe disability)
Does anyone know how to get my hands on
Otoko Neechan/Shonen H?