I'm not going to troll it, but Simoun is...
Actually, fuck it. I didn't like it at all. /a/ harped on about it and wouldn't shut up, and I'd had good experiences with similar acclaimed shows previously, like Seto, Ouran, PPD and the like, but Simoun just wasn't very good.
It had a fuckload of potantial, but it was ultimately ruined by an obvious lack of funds. Many of the characters were just shitty and superfluous. The pacing was terrible. Everyone creams all over the soundtrack too, but I thought it didn't suit the action at all. I could go on, but the band of yurifags are probably going to crap all over me as it is.
Just know that the show has dissenters, and not the usual type, who watched the first 5 episodes and dropped it, either. I watched it all, and I want my time back.