Answers:

17. Melissa Ng.
18. Irene Wong.
19. Sherming Yiu.
20. Akina Hong.
21. Chun Wong.
22. Kenny Wong.
23. Yau Ching.
24. June Chan.
25. Emily Kwan.
26. Lok Ying Kwan.
27. May Kwong.
28. Rain Lau.
29. Law Lan.
30. Law Lok Lam.

Next:
A Step Into the Past (Have we done this one yet?).

19. Yuen Wah
20. John Tang
21. Yu Tze Ming

Heart of Greed:

1. Moses Chan.
2. Bosco Wong.
3. Linda Chung.
4. Tavia Yeung.
5. Ha Yu.
6. Lee Si Kei.
7. Susanna Kwan.
8. Yoyo Mung.
9. Raymond Lam.
10. Michelle Yim.
11. Chris Lai.
12. Louis Yuen.
13. Carrie Lam.
14. Fala Chen.

That's all I know.

19.chuk man kwan
20.lee kwok lun

next: to catch the uncatchable

1. Liza Wang
2. Roger Kwok
3. Charmaine Sheh
4. Sharon Chan
5. Susanna Kwan
6. Paul Chun
7. Joel Chan
8. Halina Tam
9. Shek Sau
10. Chris Lai
11. Chu Mi Mi
12. Evergreen Mak
13. Akina Hong
14. Oscar Chan
15. Fong Yee Kay
16. Mary Hon
17. Queena Chan
18. Albert Lo
19. Lui Shan
20. Yeung Ying Wai

Next: Aqua Heroes

-- Edited by Yuuki at 07:51, 2007-05-31

Ron Ng
Tang Ho Kwong
Wong Ching
Yeung Ying Wai
Wong Chak Fung
Maria Chan
Kwan Yi Tung
Lee Choi Ning
Tai Chi Wai
Yu Tze Ming

Benny Chan
Linda Chung
Michael Tong
Shirley Yeung
Wu Fung
Lau Kong
Law Lok Lam
Stephen Au
Eileen Yao
Ching Ho Wai

That's all I know; I haven't watched The Biter Bitten.
If anyone else knows, please add on to the list.

-- Edited by honeybee at 18:29, 2007-06-05

Okay, it seems like this one's tood hard, so here's the other answers:

13. Jack Wu.
14. Yu Yeung.
15. Johnny Ngan.
16. Tai Chi Wai.
17. Lai Suen.
18. Gregory Lee.
19. Olivia Fu.
20. Lee Ka Ding.
21. Dickson Li.
22. Celine Ma.
23. Cha Cha Chan.

Next (Let's lower it to 15 now, so it's easier):
Lady Fan.

Only 4 more.

Hints: Think about Jessica's family.

Correct Yuuki!!!

Next:
The Herbalist's Manual (15).

Kenix Kwok
Bernice Liu
Fred Cheng
Paul Chun
Michael Tao
Moses Chan
Edmond So
Oscar Leung
Natalie Tong
Edward Mok
Lai Hsuan
Carlo Ng
Ching Ho Wai
Stephen Wong
Akina Hong

next: Love Guaranteed

Bobby Au Yeung
Yoyo Mung
Frankie Lam
Linda Chung
Florence Kwok
Joel Chan
Wai Ka Hung
Fred Cheng
Eddie Lee
Raymond Cho
Vivian Yeo
Oscar Leung
Yu Yeung
Kuk Fung
Mark Kwok
Yoyo Chen
Vin Choi
Ngo Ka Nin
Jay Lau
Charmaine Li
Natalie Tong
Ellesmere Choi
Chan Ka Yee
Evergreen Mak
June Chan
Astrid Chan
Vinci Wong
Yeung Ying Wai
Lee Kwok Lun
Sum Bo Yi
Mary Hon
Jack Wu
Winnie Sum
Fala Chan
Chan Hoi Yee
Lai Hsuan
Matt Yeung
Lok Ying Kwan
Patricia Lau
Lai Lok Yi

next: Men in Pain (15)

Charmaine Sheh
Steven Ma
Sonija Kwok
Michael Tong
Moses Chan
Maggie Siu
Jay Lau
Annie Man
Marco Ngai
Anne Heung
Maggie Wong
Shing Jin Kuen

Roger Kwok
Jessica Hsuan
Raymond Cho
Leila Tong
Chun Wong
Rebecca Chan
Hui Siu Hung
Lo Yuen Yan
John Tang
Natalie Wong
Yuen Wah
Angela Tong
Lee Seng Cheung
Lee Kwok Lun
Winnie Yeung

next: A Pillow Case of Mystery (15)

wong he
alex fong
yoyo mung
jessica hsuan
maggie cheung
flora chan
kevin cheng
annie man
stephen au
jenny shing
leila tong
chu mimi
ellesmere choi
yuen wah
chiang chi kwong

next:Detective investigation files 3 (20)

Kenix Kwok
Bernice Liu
Fred Cheng
Paul Chun
Michael Tao
Moses Chan
Edmond So
Oscar Leung
Natalie Tong
Edward Mok
Lai Hsuan
Carlo Ng
Ching Ho Wai
Stephen Wong
Akina Hong

next: ATE (20)

ron ng
ella koon
kenix kwok
joe ma
lau dan
mary hon
lo hoi pang
ellesmere choi
edward mok
winnie yeung
derek kwok
elaine yiu
john chiang
rebecca chan
Law Kwun Fung

to catch the uncatchable (15)

1. Frankie Lam
2. Kenix Kwok
3. Chris Lai
4. Don Li
5. Leila Tong
6. Nancy Wu
7. Jack Wu
8. Lam Yuen Ying
9. Matt Yeang
10. Law Kwun Fung
11. Kwok Jing
12. Cheung Chi Hin
13. Ip Wai
14. Wong Ping Hei
15. Ellesmere Choi
16. Liu Kai Chi

Jordan Chan.
Steven Ma.
Cherie Chan.
Rain Lau.
Noel Leung.
Hilary Tsui.
May Kwong.
Ching Ho Wai.
Law Koon Lan.
Celine Ma.
Mark Kwok.
Lai Suen.
Kwan Hoi San.
Kuk Fung.
Cheung Kwok Keung.
Lau Kong.
Ai Wai.
Alberto Lo.
Tai Chi Wai.

Next:
Scavenger's Paradise (15).

I can't remember much from this series, because I watched when I weas really young, so my list is kind of short at the moment:

1. Bobby Au Yeung.
2. Kong Wah.
3. Roger Kwok.
4. Marianne Chan.
5. Fiona Leung.
6. Nadia Chan.
7. Suet Nei.
8. Angie Cheung.
9. Akina Hong.
10. Wong Ching.
11. Ha Ping.

Michael Miu.
Melissa Ng.
Kenneth Ma.
Bernice Liu.
Power Chan.
Vivien Yeo.
Patrick Tang.
Michelle Yim.
Lok Ying Kwan.
Rubyanne Choi.
Law Mong.
Hui Siu Hung.
Rebecca Chan.
Ha Ping.
Johnson Lee.
Chan Hoi Yee.
Wong Ching.
Ben Wong.
Akina Hong.
Ivan Yau.
Yuen Kit Yee.
Amy Ng.

Next:
Journey to the West (15-20).

Yes, Louisa So and Emily Kwan were in the second one.

You need to get at least 3 more.

Some hints:

-Marianne Chan's Husband.
-Wayne Lai's Love Enemy.
-Rain Lau's Pursuer.
-The Heaven Emperor's Mother.
-Gordon Lau's Nephew.
etc.

No, Kingdom Yeun was only in the second one.
Sherming Yiu was Wayne's Love Interest in the second one.
Yes, Joyce Chen was in both, but as different characters.

-Gordon Lau's Nephew - Joyce Chen.
-Rain Lau's Pursuer - Johnny Tang.
-Wayne Lai's Love Enemy - Derek Kwok.
-Marianne Chan's Husband - Edward Mok.
-The Heaven Emperor's Mother - Lo Yuen Yan.
Others:
Lau Kong, Tai Chi Wai, Wai Ying Hung.

Healing Hands 3:
Lawrence Ng.
Bowie Lam.
Gigi Lai.
Moses Chan.
Melissa Ng.
Maggie Siu.
Raymond Cho.
Bernice Liu.
Chan Hung Lit.
Michael Tong.
Claire Yiu.
Halina Tam.
Annabelle Lau.
Cheng Zhi Seng.
Yvonne Lam.
Sam Chan.
Wai Ka Hung.
Jacky Wong.
Irene Wong.
Maria Chan.
Cheung Chi Kwong.
Chan Ka Yee.
Gregory Lee.
Josephine Shum.
Kenny Wong.
Natalie Wong.
Belinda Hammnett.

Next:
Gods of Honour (15-20).

(If I remember correctly, Yes, Law Lan was Yuen Wah's Mother).

Nick Cheung.
Bobby Au Yeung.
Gordon Lam.
Marco Ngai.
Esther Kwan.
Nadia Chan.
Annie Man.
Yvonne Yung.
Wu Fung.
Ching Ho Wai.
Law Mong.
Rebecca Chan.
Ha Ping.
Kuk Fung.
Derek Kwok.
Eddy Ko.
Florence Kwok.
Ellesmere Choi.
Akina Hong.
Anne Heung.
Gordon Lau.
Lo Hoi Pang.
John Tang.
Lau Kong.
Celine Ma.

Next:
Burning Flame (20).