Japanese series that include comedy and weren't mentioned above:
- family/becoming family/comedy/romance : Brother Beat; [/B]Kiken na Aneki; I've Been Married to Hell!;[B] Seigi no Mikata; Shotgun Wedding; Yasuko to Kenji
- romance/comedy/ : Zettai Kareshi; Kekkon Dekinai Otoko
- reverse harem/comedy/romance : Yamato Nadeshiko Shichi Henge
- detective work/comedy: HERO; Mr.Brain; 4 Shimai Tantei Dan; Unubore Deka
- comedy/sports/romance : One Pound Gospel
- school comedy/romance: My Boss, My Hero; Ouran High School Host Club; Hana Kimi; Samurai High School; Yankee-kun to Megane-chan; Yamada Taro Monogatari; Yukan Club; Switch Girl!!; Moyashimon; Fuma no Kojiro;

I can only recommend mostly comedy as the Japanese series I see usually have little romance.
Jeaniessi wrote: Are there any Japanese drama lovers that can give some recommendations for some of these genres?


I have watched a lot of Japanese drama's.. let me peruse my list and your ptw list, and see what I can recommend.

Okie Dokie.. the first set of drama's are already on your PTW list, and I would recommend them, to a degree...

Comedy-Atashinchi no Danshi & Ikeman Desu Ne
Rom/com-Hotaru no Hikari 1&2
Rom/Melodrama- Last Friends, Sore wa,Totsuzen Arashi no you ni
(I am just gonna call it the CSI type genre)-MR BRAIN

Now the one not on your PTW list...
Rom/Drama-Anego, Sapuri (these two are basically the same but eh you might like older woman younger man)
Rom/Melodrama-Sunao ni Narenakute
Mystery/Action-Bloody Monday 1&2
Family Drama- Dare Yori mo Mama wo Aisu, Uta no Onii-san
CSI/Law&Order- Joker Yurusarezaru Sousakan, Lady~Saigo no Hanzai Profile~, Koshonin 1&2
Comedy/school-Samurai High School
My favourite to watch and act is : Japanese romance, school, comedy, mystery :)