DBSK

DBSK (also known as TVXQ) is one of the most popular and well-known K-Pop boy bands in the world. Originally a 5-member group, they are now active as a duo, and have managed to take over the music scene several times during the past few years. Although they are not the music gods they once were, the group is still very talented and have had some of the coolest concepts I've ever seen in K-Pop.

"Keep Your Head Down" (2011)
This was their first single after three of the members left and they came back as a duo. While I didn't completely love the song, I thought the music video was really cool, with all the fire effects and the powerful dance break in the beginning.

"Catch Me" (2012)
This is their most recent single, released in September. This time, I really liked both the song and the music video, but what really wowed me was the choreography. Whoever came up with this is pretty amazing. Much props to the backup dancers, as well as both the members, for being able to pull off such difficult choreography. Check it out for yourself, especially 3:30. You'll know what I mean.