Well of course there's
Fruit Basket. I remember actually crying when she ended up with whoever she ended up with (just in case you haven't read the story, I'm going to be vague but I doubt you haven't) because it was such a nice surprise and it was just... perfect. I liked that manga, but somehow I can't bring myself to reread it. I'm not a fantasy fan and it was too troublesome to read, not to mention I didn't like the art, they all looked like 10 year olds.
Of course there's
Cat Street. Hmm, I'm going to add more later if I remember anything.
edit: Okay I just went through my reading list... these are all mostly shoujo and josei.
Bitou Lollipop - not sure if it fits exactly. It's still ongoing (and the scanlations haven't catched up with the latest release) so you can't tell for sure who she ends up with, although it's kind of obvious, still you know, you can't be too sure. I remember getting pretty scared at the beginning because I hated the guy who looked like she might end up with, but it wasn't him after all. Now he's more 'present' in the story and I don't really want him to get in between them.
Bokura ga Ita - Although I like this manga despite its drama, often times I just want to punch Nana for choosing to be miserably in love with Yano instead of choosing a calm life with Takeuchi. Maybe because I think if I was in her position I'll fall in love with Takeuchi instead.
Heroine Shikkaku - The main male lead is a jerky jerk. I've read the chapter summaries and it seems like there's going to be a turn around. I am happy!
Tonari no Atashi - Kind of the same situation with Heroine Shikkaku, now that I think about it. Childhood male leads (surprisingly they always have dark hair) taking for granted the heroines and realizing that they love them after all when a better guy comes along (the light haired cute ones).
Kuragehime - Adding this here even if it kinda doesn't fit anything because the love triangle is awesomesauce and you don't really know who to root for because both are great guys! Finally, huh?
Oboreru Knife - I read the chapter summaries and I think this manga has a great love triangle potential. The characters are incredible and I think when the scanlations catch up I will be having a hard time deciding who is the 'wrong' person in the love triangle (or is it square now, I'm not sure).
Tonari no Kaibutsu-kun - As much as I love Haru (the main lead) and as much as I think that they are perfect for each other, I can't help but root for the underdog. Yamaken is so moe it hurts. Lol I can't even believe I used that word. I don't want him to hurt but I also want him to realize he's not the one and can he just be a real life person, please?
Cousin - Well the scanlation was dropped (it got licensed) but the love triangle is interesting. I rooted for the underdog and
Spoiler (mouse over to view)
it is hinted in the end that there is a future for them
Not sure if he was really the underdog, hmmm, he was just the other guy who the heroine did not consider at first.
Yumemiru Taiyou - I don't read this anymore but I remember not liking it when the main male lead turned out to be the older, tsundere guy. I loved the cuter younger guy who is the heroine's same age. I don't like the older guy-younger girl dynamic most of the times.
Parfait Tic! - Who can't forget this! I love this series, I know a lot of people are annoyed by it, but wth, I really liked it. Some people really rooted for Ichi but I was one of those who rooted for Daiya, the main lead. Their archetypes are reversed somehow, in most mangas the Ichi type is the main lead and Daiya type the underdog. I liked the ending (again I just read the summaries, boohoo).
Principal - This is relatively newly scanlated and the story is still ongoing. I am rooting for the other guy. The love triangle isn't really apparent yet but you could see it coming. The girl loves someone pretty badly already (not the one I'm rooting for) and you could see hints that it is going to be an interesting dynamic between the three of them, there are actually more characters involved but who cares.
Six Half - Not sure if this belongs here, but the love relationships are interesting. I think you'll like it.
Spoiler (mouse over to view)
She is in love with her older brother and there's this other guy she depends on.
Tenshi Nanka Ja Nai - I love the main lead but I rooted (albeit for a short time) for this other guy in his short appearance. He was such a good guy.
I hope you find something you like here, I enjoyed making this list!
edit 2: You were looking for other things too? For drama I recommend My Girl, Lee Jun Ki's role is basically the best 'other guy' ever in a kdrama. I think. Haha. Yeah so far this is the only one I could think of.
Last edited by kebi at 2:23 am, May 18 2012________________
I also go by amatsu.