On the most recent episode of the MBC entertainment program 'Infinite Challenge,' which aired on December 20, 2014, the Infinite Challenge members met with Bada and Shoo of the 1990s popular girl group S. E. S. On this day's episode, Bada and Shoo danced to their songs, such as "Just a feeling" and "I'm your girl." Shoo seemed to be so thrilled to be dancing and singing again, because she had been living as a full time mother for the past couple of years. She said to the Infinite Challenge members, "I have been jealous of Bada. I always asked her when we were going to work together again, because I have been giving up what I had wanted to do." In related news, on the most recent episode of the popular MBC entertainment program 'Infinite Challenge,' the members recruited popular singers from the 1990s and hosted a stage performance, showing popular songs from the 1990s. The MBC entertainment program 'Infinite Challenge' is one of the popular, long lasting entertainment programs in Korea. It features the Infinite Challenge members Ha Ha, Park Myung Soo, Yoo Jae Suk, Jung Joon Ha, and Jung Hyung Don.