UV released a video featuring JYP called "Itaewon Freedom." Harlem Desire by the London Boys is the inspiration for "Itaewon Freedom," which is hilarious, if only worth one viewing.
The old/new Crown J video, featuring Young Dro is such a failure (in my opinion) that I wish I could say it was just a joke, too. The video features a woman who cannot keep her tongue in her mouth. And what's the point of releasing a song in English about how all the panties are dropping and how you "want to fuck her"? The BEST thing about Korean hip-hop/rap is that it's NOT all disgustingly sexualized. Or at least until this song/video came along.
U-KISS released a song that's a bit too soft and sappy for my taste, 0330. But there are some good dance moves and the rap part of the song isn't that bad, so I'm not entirely ignoring it. Check it out if you want.
DBSK/TVXQ/동방신기 have released a dance version of Before U Go. Since we're talking about guys who are excellent dancers, give it a look, it's worth it. I have to admit though that I think it's really funny that you can have a dance version for such a slow and (to me) boring song. The video is kind of interestingly sparse, no colors, really.
4 Minute released "Heart to Heart" The video features a guy from CN Blue. The video has an annoying story intro, but turns into a dance track once the music gets going. Unfortunately the story is horrible. First the girl is annoying, then the guy doesn't want to deal with her, so she does all this horrible stuff to him (mostly practical jokes until she removes a part from his car) which is supposed to make him at the end want to be nice to her again. Uh, not. A reviewer at allkpop seems to find it about as much of a letdown as I do.