Wonderful Days (50 Episodes)

Lee Seo Jin as Kang Dong Seok
Kim Hee Sun as Cha Hae Won
Ok Taecyeon as Kang Dong Hee

http://en.wikipedia.org/wiki/Wonderful_Days

Star's Lover (20 Episodes)

Choi Ji Woo as Lee Ma Ri
Yoo Ji Tae as Kim Chul Soo
Lee Ki Woo as Jung Woo Jin
Cha Ye Ryun as Choi Eun Young

http://en.wikipedia.org/wiki/Star's_Lover

Jang Bo Ri Is Here! (52 Episodes)

Oh Yeon Seo as Jang Bo Ri
Kim Ji Hoon as Lee Jae Hwa
Lee Yoo Ri as Yeon Min Jung
Oh Chang Seok as Lee Jae Hee

 http://en.wikipedia.org/wiki/Jang_Bo-ri_is_Here!