If u want something very unique and cute , watch "Hogoo's love" . I didnt watch this drama at first , but it turned out to be SOOO OUTSTANDING !!
Want some melodrama ? watch "secret love" or "Innocent man" or "incarnation of money". For a historical drama : "Jang ok Jung live in love" . For good action , i would suggest "Heartless city" or IRIS . For an amazing family romcom drama : "Lee soon shin is the best" . For a good Jdrama : watch Last cinderella or Nodame cantabile .
Or you can watch the classic ones if u didnt already such as You who came from the starts or Kill me heal me . And u can check my list for more ;) . Enjoy the watch !!!