Yeah.
I know this came out ages ago, but I just started watching it, as I was in the middle of K-ON! Season 2 when it came out. Currently on ACT 5. I quite like it. Really intresting. The only downside is all this panties in the opening D; It burns my eyes... and the medical teachers - yeah lets not go there. The music is really good too. I'd personally reccomend it to a friend, but none of my friends watch anime :L
What you think of it? If you havn't seen it, watch it... IMMEDIETLY