I know that the author of this manga/anime is Bisco Hatori. It's about a high school (no duh), where a group of guys (excluding Haruhi Fujioka), create a club about entertaining women. It's extremely hilarious, and very eccentric. The characters are Tamaki Suoh (the founder), Kyoya Ootori, Haruhi Fujioka, Hikaru & Kouru Hitachiin, Mitsukini Haninozuka, and Takashi Morinizuka. The whole series is 26 episods.