I'll try, although it's going to be hard, and I'm sure I'm going to forget something. And you've added a lot of categories! LOL ;)
01. Best Romantic Comedy - The Naked Kitchen (not exactly a rom-com, but I haven't seen many of those)
02. Best Historical - Letters from Iwo Jima
03. Best Horror - I don't watch horror movies
04. Best Thriller - Secret Reunion
05. Best Melodrama - is it a melodrama? I don't know... anyway: Postman To Heaven
06. Best Action/Adventure - Hero by Zhang Yimou
07. Best Actress in a Lead Role - Maggie Cheung in In the Mood For Love
08. Best Actor in a Lead Role - Yosuke Kubozuka in GO!
09. Best Supporting Actress - Zhao Wei in Red Cliff 1&2
10. Best Supporting Actor - Tony Leung in Hero
11. Best Child Actor/Actress - Kim Sae Rong in The Man from Nowhere
12. Best Second Lead Male - Joo Ji Hoon in The Naked Kitchen
13. Best Second Lead Female - N/A
14. Best Comedic Performance - Cha Tae Hyun in My Sassy Girl
15. Best Villain - Kim Sung Oh in The Man from Nowhere
16. Best Villainess - Takaoka Saki in A Long Walk
17. Best Couple - Jae Kyung & Eun Hwan in A Millionaire's first love
18. Best Song/ Music - Secret (Taiwan) all music pieces with no exception
19. Best Scene - Secret: Jay Chou playing the piano faster and faster while the building is being pulled down
20. Best Visual Effects - Duelist
01. Worst Movie - 100 days with mr. arrogant (I get a rush only thinking about it)
02. Worst Actor - Matsumoto Jun in The Last Princess
03. Worst Actress - Kuroki Meisa in Aru Ai No Uta
04. Worst Chemistry - 100 days with mr arrogant OR He was cool
05. Worst Song/ Music - I can't remember...