(Yes, the following are the types of dramas I like. Yes, it is something I abhor in real life. No, I do not condone the behavior of people like that. No, I am not insane. Just FYI.)
So... Basically, I really like to watch dramas where the male lead is pretty much obsessive over the female lead. It can be a love-hate relationship, a revenge drama, a misunderstanding, just a failed courtship... if he's pursuing/stalking/courting/kidnapping her for love, (though the love can come later, it can start with hate etc.) it is my kind of drama. It doesn't have to be the main couple, it doesn't have to be the main plot, the genre doesn't matter, it can be graphic or PG, lovey-dovey or abusive, dark or funny, with happy or tragic ending, I can watch anything.
I watch Korean, Japanese, Chinese, Taiwanese and Thai dramas, anything goes.
(If anyone wishes to try recommend something, please please please do, I'd really like to watch some new dramas. But take it as a challenge... as I have watched probably 100+ dramas like this and can't even begin to list them. :'D)
A few examples:
A Sleeping forest (Japan)
Behind your smile (Taiwan)
Boys over flowers & Hana yori dango & Meteor Garden (Korea & Japan & Taiwan)
Sawan Biang (Thailand)
Cruel Romance (China)
Jam Loey rak (Thailand)
Last friends (Japan)
Lady & Liar (China)
When a man's in love (Korea)
(Sealed with a kiss and Le jun kai... I did watch them. They were good, but there was no love, just abuse. I could watch more like those, but even for my weird tastes in dramas, they left me feeling horrible.)