Angel Eyes (20 Episodes)

Gu Hye Sun as Yoon Soo Wan
Lee Sang Yoon as Park Dong Joo

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

Monstar (12 Episodes)

Ha Yeon Soo as Min Se Yi
Yong Jun Hyung as Yoon Seol Chan
Kang Ha Neul as Jung Seon Woo

 http://en.wikipedia.org/wiki/Monstar

Potato Star 2013QR3 (120 Episodes)

Ha Yeon Soo as Na Jin Ah
Yeo Jin Goo as Hong Hye Sung
Seo Ye Ji as No Soo Young

 http://en.wikipedia.org/wiki/Potato_Star_2013QR3

Cunning Single Lady (16 Episodes)

Lee Min Jung as Na Ae Ra
Joo Sang Woo as Cha Jung Woo
Kim Gyu Ri as Gook Yeo Jin
Seo Kang Joon as Gook Seung Hyun

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

The King 2 Hearts (20 Episodes)

Ha Ji Won as Kim Hang Ah
Lee Seung Gi as Lee Jae Ha
Jo Jung Suk as Eun Shi Kyung
Lee Yoon Ji as Lee Jae Shin

http://en.wikipedia.org/wiki/The_King_2_Hearts

Emergency Couple (21 Episodes)

Song Ji Hyo as Oh Jin Hee
Choi Jin Hyuk as Oh Chang Min
Lee Pil Mo as Gook Cheon Soo
Choi Yeo Jin as Shim Ji Hye
Clara as Han Ah Reum

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

My Love From Another Star (21 Episodes)

Jun Ji Hyun as Cheon Song Yi
Kim Soo Hyun as Do Min Joon
Park Hae Jin as Lee Hee Kyung
Yoo In Na as Yoo Se Mi

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

Prime Minister and I (16 Episodes)

Lee Beom-soo as Kwon Yul
Im Yoona as Nam Da Jung
Yoon Shi-yoon as Kang In Ho
Chae Jung-an as Seo Hye Joo
Ryu Jin as Park Joon Ki

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