Mnet's "M! Countdown" is back with another episode of great performances and musical treats. Besides the usual stages on the show today, f(x), Rainbow, and A Pink begun their follow-up promotions. Elsewhere, F.T. Island said goodbye, while 8eight made their comeback. It was a battle between Kim Hyun Joong, f(x), and SECRET for the #1 spot on "M! Countdown" today, and in the end it was Kim Hyun Joong who got his second consecutive win on the show! Congratulations to Kim Hyun Joong! [gallery] === Songs that charted this week === Behind the scenes of Kim Hyun Joong's win last week. === T-ara's comeback was teased. === Other performers who stood on stage included M to M, Sunny Hill, Rania, N-Train, Monday Kiz, Bubble Sisters, Jewelry, 4MEN, and Jang Jae In. Check out their performances below! ===