@Ranie - Aside from Signal (which you've seen), That Winter, The Wind Blows is probably my all-time favorite drama. <333 It's just so beautiful, I love it.
Also, the movie Always is fantastic and you should really check it out.
LOL, ironically (and I SWEAR this wasn't intentional, I just realized that I did this....), both the movie and the drama have a blind female lead. xD