justin & sammi
as for the rest, i dont really care..as long as the songs are gd, then i'll listen to them ^.^

ai-ai de las alas
boa kwon
hyolee
eugene
pokwang

L'Arc~en~Ciel, Gackt, Miyavi, Super Junior, Fly to the Sky

BoA, Rainie Yang, Ayumi Hamasaki, Utada Hikaru, Tommy Heavenly

Kal (female)
Mos (male)
Tata Young (female)
Dan of D2B (male)
Katreeya English (female)

**Click on the links if you'd like to view their MV via YouTube**

P.S. I like way more than 5 singers. These were the 5 that came to mind when I read the thread. =]

twins, boyz(split up), jay chou, rainie yang, leo ku

WOW!!!!
that is thoughy...lolz
but not really
my favy singer is Bi Rain
he has the moves that the voice
he is also in movies that i like too, so that is an easyish choice, but not really
i've seen other korean singers, but not as good as him though
but if i find a better one than him, then i'll let ya know...lolz

For me they would be Nicholas Tse
                              Rain Bi
                              Edison Chen
                              and Miyavi

My favorite is Namie Amuro of course.. I just think she is sexy and has a great voice and great songs. Although I prefer her older material better because it was a little less "gangatsa" but I'm ok with her being the queen of hip pop still.

Edit:: Ok I didn't see top 5 xD

Lets see:::

Namie Amuro
Crystal Kay
BoA
Utada Hikaru
Ayumi Hamasaki

I keep my feet on solid ground
and use my wings when storms come around