Mnet's "M! Countdown" is back with another episode of great performances and musical treats. Besides the usual stages on the show today, 4MEN performed their second title song, while B2ST performed a special goodbye stage. Meanwhile, rookie girl group Leader's made their debut. It was a battle between Kim Hyun Joong, F.T. Island, and SECRET for the #1 spot on "M! Countdown" today, and in the end it was Kim Hyun Joong who clinched the win tonight, making him the first SS501 member to win a trophy since each of them begun their individual activities. Congratulations to Kim Hyun Joong! [gallery] --- Other performers who stood on stage included Jang Woo Hyuk, Young Jee, M to M, Sunny Hill, Boyfriend, N-Train, Jang Jae In, 5dolls, Heo Young Saeng, Baek Ji Young, and Illinit. Check out their performances below! ===