Given the nature of the title, I'm only going to list animes in which I have seen the whole thing, and did not, overall, find good.
Eureka Seven
If the anime makes you cry when you watch, it is usually a good one.
But when you make the anime cries when you watch, it is not a good one.
Final Fantasy Unlimited
An example of an anime that makes you cry, but not because it is good.
Fate/Stay Night
Ok, it wasn't horrible, but it certainly wasn't good; certainly not as good as it ought to have been.
There was just so many tasteless scenes, and the plot moved along so jarringly I got car sick from watching it.
They are making a movie though, which hopefully will be handled well.
(The premise has great potential, I just haven't seen it used yet.)
Witch Hunter Robin
If anyone disagrees with me on this, it is only because they fell asleep while watching it.
Trust me.
If you had through some miracle of God managed to stay awake and watch the whole series like I did, you would have to agree that this was a bad anime.
Kiki's Delivery Service
I stayed awake throughout all of Witch Hunter Robin, but this almost made me fall asleep.
That's all I've got to say about that.