A few threads ago I posted some mini-reviews of some in-progress anime series I was watching: http://lesswrong.com/lw/hlm/june_2013_media_thread/9350 For the sake of completeness here's my ratings of those series now that they've all finished:

Flowers of Evil: 9.0 (was my most anticipated show of the season by the end)

Attack on Titan: 8.5 (slow in the middle, but good at the beginning and end)

Valverave the Liberator: 8.0 (still amusing nonsense, weak ending)

Gargantia on the Verdurous Planet: 7.0 (went off the rails in 3 different directions)

Note that this is on something of a "school grade" scale (ie 7.0 is more "acceptable" than "good"). Also I seem to be pretty generous overall.

During this time I also watched A Certain Scientific Railgun and sequel A Certain Scientific Railgun S (basically Buffy meets X-Men meets cute Japanese high school girls), giving 9.0 and 8.5 respectively. (The latter would have been an 8 but the last episode was amazing).