I would probably say
Innocent Love is the worst in terms of quality that I've seen (but again, I haven't seen that many, around 20, mostly newer ones (from 2004 onwards). I managed to finish it though, and didn't necessarily dislike it, I just thought it was bad
.
In terms of acting, definitely
Proposal Daisakusen (and maybe Kurosagi too, but I stopped watching after 15 minutes to avoid myself some cringing time). But content wise, I don't think Proposal Daisakusen was bad. I thought it was interesting actually (that's why I kept watching although every time the two main characters get together, I had to ask myself, "Are you sure these two want to be here, or would they rather be home napping?" It's just my honest, humble opinion, and just mine, that YamaP does not show any kind of emotion whatsoever on his face. Except in Nobuta wo Produce, which is my second favorite drama of all time behind Nodame Cantabile.
Eh... I like Kame in NwP, but couldn't stand
Gokusen 2.
Kami no Shizuku was kind of bleh. If not for Kame I would never have finished it. "Annoying" is not enough to describe the female lead.
Oh yeah the only drama that annoyed the heck out of me was Hana Yori Dango. Usually with dramas that don't seem promising (to me), I stop watching them as to avoid the hate. But HYD was really popular, and everyone raved about it. So I was watching and at the same time I wished it would be over at any second. But now that I'm rewatching it (for certain reasons, of course), I realize it's not as bad as I made it out to be. It's OK, maybe even good if you like the boy-girl-and-their-1000-obstacles-and-more-than-obnoxious-villains-trying-to-stop-the-two-love-birds
: But that's IT. And people were talking about it like it was the best drama in the world, which probably annoyed me more than the drama itself.
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I don't think
Hana Kimi was bad. I think it was ok, but the lessons from the vice principal just got too blatant for my taste. Educational messages should be like those in Nobuta wo Produce (and even in NwP I felt like some scenes were too blatant, but oh well).