Haha, I am also into K-pop! My favorite groups are CNBLUE, Infinite, U-Kiss, Block B, Brown Eyed Girls, Sistar, T-ara and Orange Caramel (these 3 are more to dance along)
Then some pop (mastly Taylor Swift) and brazilian funk (Anitta, Valeska, Ludmila, MC Koringa - because his last MV is so nerdly amazing-), also some anime songs, these are the ones I sometimes looks for to listen on youtube, I download and buy only k-pop >< But I do not mind a lot of things, oh! And I've been listening to Fall out Boy and Black Veil Brides lately.