Ok a small list of HORRIBLE anime.

X both the TV series and movie are crap neither one of them have a plot its basically crappy fighting.

Noir Crappy music, horrible plot, SLOWER then dirt and COMPLETELY uninteresting

Serial Experiment Lain Well I sleep through it every time it bores me to tears and I have NEVER made it through the entire series you can all say how great it is but it never ends.

Gasaraki This thing makes NGE look like its normal you can't remember what happened in the last episode before that one.

Beyblade is a no brainer its a anime about BATTLE TOPS what the hell is that.

Hamptaru is bad but its for little kids so can't say much