I'll watch pretty much anything, but I'm not real into mecha or anything involving sci-fi/space kinda things. Or psst-apocalyptic settings. Just doesn't do it for me.

Anything with incest-type relationships. In love with the stepfather, sister, etc. It makes me really uncomfortable, even though it's only fiction.

romance!
argggggggggggggg it's makes me crazy!!

they always crying for something stupid!!

and there's always happy ending!

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Yaoi anime and manga (boring doesn't go anywhere predictable, too many fangirls obsess over it)

manga that doesn't go anywhere, like bleach... ugh or Tsubasa, Chrono Crusade etc...

and umm probably just love stories that are predictable.

If it doesn't scream different then it's not good >.< in it's on way than it's not good

anime's like Naruto, Bleach and Inuyasha I avoid to watch.
further there is Yaoi what I (almost) never like... but when there are vampires in it, please tell meXD vampire anime/manga are awesome^^ and some shoujo anime I avoid to watch...
I am a weird girl that likes anime/manga with much blood, sometimes some incest (onegai twins), yuri/shoujo-ai, and vampires!~ XD

Agreed. For some reason Naruto people hate one piece, and one piece people hate naruto.

I like One Piece. One Piece FTW!

EDIT: Apart from one piece, if an anime has too many episodes, I just read the manga, it's faster, no fillers

Yuri! I avoid that like the plague xD
That and the overdramatc scenes .. like someone dying and giving a huge speech before he goes .. urgh i hate that >_<

shounen-ai
ill never ever watch it

Mecha, just due to the lack of originality most have. I just don't like the aura it gives off.