If you love girls with ponytail, then you must check out AKB48 16th latest single Ponytail to Shushu 「ポニーテールとシュシュ」, which is scheduled to be release on 26th May 2010.
Here’s the member that were featured in this music video:
Team A: Kojima Haruna, Shinoda Mariko, Takajo Aki, Takahashi Minami, Maeda Atsuko
Team K: Itano Tomomi, Oshima Yuko, Ono Erena, Minegishi Minami, Miyazawa Sae
Team B: Kasai Tomomi, Kashiwagi Yuki, Kitahara Rie, Miyazaki Miho, Watanabe Mayu
Team S: Matsui Jurina
Even though I never watched Working!! myself (wished I did), I... – 
dat queen and elizabeth
Atsuko Maeda is my waifu.
Seriously.
She does look really good in a bikini and ponytail ^^
fanservice: now in 3D