(don't know what in the world Kannagi would be classified as but...)
I liked Kannagi mainly for its references to aspects of otaku culture rather than for the plot- but I do think it would have been better had it focused more on Kannagi's godliness and her adventures in modern-day life. But then, also, if it were longer, I would have loved to see more of the sempais in the art club. The artwork and animation of the series is great (love Kannagi's expressions) and the music matches the mood very well (lol Karaoke ep ED).
Kannagi/Zange/Tsugumi- cute or annoying? Both? Personally I thought Zange was pretty annoying and intrusive- although, if I were in Jin's place, I would be quite happy (and confused) at what to do with the three girls fawning over him all the time.
Haruka Tomatsu (Kannagi) is not only a good seiyuu but also a great singer- do you think they're trying too hard to get her to compete with Aya Hirano (Haruhi)?