Black Rock Shooter: I liked the 1st OVA a lot, and the TV series was good, but not great. The designs for the characters' alternate egos were cool, and I really liked the first arc about Kagari and Yomi's relationship, but the rest of the story seemed to be missing something, imo. Maybe would have been better with a few more episodes???
Guilty Crown: What a trainwreck. I really liked the first 8 or so episodes, and I think it would have been much better off if the writers had written a conclusion around that time. In going on (and on and on), the plot ended up jumping from place to place with little attention to transitions, and overall, the characters' motivations and personalities weakened over time. I thought Shuu's character development was stilted and hollow, while the female characters were never overly dimensional or appealing. Too much back-and-forthing on the writers' part, but the mecha battles were pretty fun.