Death Note, after the main character kills the fbi guys wife. I became sick of the same bullshit banter, and knew where it was going.
Haruhi. Sometime after episode 5. Lame fan service, characters, plot. I love lucky star however.
Also kaiji, Mashimon (? fucking germ anime), Akagi, ergo proxy, second season of fmp, gundam wing. Lots more that I can't think of right now.