Biggest Anime Disappointment?

Definitely Angel Beats. The series didn't really know what it wanted to be. It had okay humor, but turned into this mess with a bunch of rushed romances. One of those cases of having a cool concept with horrible execution.

*SPOILER* Death Note after L dies. Also, for me personally, Evangelion. I watched it because it was a legend. I did't expect this weird, Freudian crapfest with absolutely despicable characters. I understand the appreciation, actually, I just can't stand these "deconstruction" type shows usually. Madoka was the exception, but I still didn't love it. Just my personal preference. Critics dig the darker stuff (Empire Strikes Back Effect), but I just don't.

Fun fact about Death Note. Even the writers thought continuing the series after L died was a bad idea. But Shounen Jump forced the manga to continue for the sake of sales since they thought the series was too short. This was later fixed in the Death Note Live action and portrayed (referenced) in their later manga Bakuman.

Uhhh That's an interesting question. Let's see...maybe Black Rock Shooter the anime. The Ova who was released before was awesome, but the anime...meh It was, how can I say...boring. So sorry for the fans xD

Its so sad it couldve been such a great anime but the producer decide to skip and end the anime has fast has possible I hope for those who made that to never touch an anime again