I second the votes for Nobody Knows.

I submit for addition:
Memories of Matsuko
Premonition
Old Boy (korean)
Curse of the Golden Flower (chinese)
Sugar and Spice

I also enjoyed Ikigami and Confessions, but I see they're already on your list :)
Thanks everyone, I ended up watching only two movies so far (Psychic and Wushu) and I loved them both.
And I finally got around to watching A Millionaire's First Love. Amazing movie everyone should watch.
to me skye

kaiji (live) and deathnote (live) = skip ^^ anime version = win x10
skye&R

skip Kaiji & deathnote live... ...watch anime version instead = x10 awesomeness ^^
to_la_Cam wrote: skye&R

skip Kaiji & deathnote live... ...watch anime version instead = x10 awesomeness ^^


I've actually seen both their animes :P
heres my recomendation


(korean)

old boy (you will never forget the climax till you die)

my sassy girl (if you were a boy, you will definitely enjoy this x5)

memories of murder (best based on true story thriller ive seen)


Failan (better than romeo n juliet _ titanic combine)

(japan)

memories of matsuko (dramedy)

(hongkong)

infernal affairs trilogy

others: coming soon ^^ (its pain to think)
These are my favourite Korean films in no particular order, just the one I remembered them in.
I'll do a Japanese list when I can remember more XD.

Korean:
1. Hansel And Gretel
2. Midnight FM
3. The ESP Couple
4. I'm A Cyborg But That's OK
5. The Man From Nowhere
6. Hello Schoolgirl
7. Windstruck
8. Two Faces of My Girlfriend
9. Oldboy
10. Our Happy Time
1. Death Note (Japanese)
2. Hansel and Gretel, it's not a scary movie. I promise (S. Korean)
3. Secret (Taiwanese)
4. Curse of the Golden Flower (China)
5. Love in Disguise (Taiwan)
6. Temptation of Wolves (S. Korean)