Grumble Grumble Grumble
Now lets see... Great Anime Series with horrible endings....
The top of my list would be the GAINAX Studio series Mahoromatic as the last episode had this horrible description of what the end of Mahoro did to the main character when he grew up to become a ...
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Android Bounty Hunter. (But no doubt this was because it was based on the Manga series ending, which at last I've heard was more detailed, and covered the other main characters as well...)
A close second on this list (and still bad enough to make you want to throw the DVD case at the screen) would be the series called Martian Successor Nadesico which ended the series on an extreme cliff hanger, to be concluded in the 2nd season that was never made. The one sequel that did come out was the movie Martian Successor Nadesico: The Prince of Darkness which was written as a sequel to the two novels and video games that came out after the TV series (and of course, never published in the US market...) which resulted in a story that made little sense to the US viewers, and didn't address the cliff-hanger ending of the TV series...
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