I'm just going to throw this one out there and don't expect a whole lot of positive replies, but I'd have to say Neon Genesis Evangelion. Some story elements in it were really awesome, like the first episode and beginning of the second, then near the end when
it turns out the EVAs are creatures themselves.
. But it was so raved and hyped about "blowing my mind" that I had no choice but to watch it, and about every 4th episode, I was getting bored, but then one instance would happen that made me think the show was going to take a stronger, psychological twist... and it didn't, only did the last 2 or 3 episodes contain what I was searching for. really for me the show was endless fight after fight, Shinji being a bitch, Askua was a bitch, Rei was just strange, and a lack of explanation to several things that are pretty important.