I don't normally like dropping shows because of ocd haha, I normally try and finish a series after I've started it, even if it's a struggle. Here are a few that have slipped through my fingers:
Death Note: It was interesting enough at first, but I stopped watching for a while, then forgot what episode I was on anyways and realized I didn't have enough motivation to keep watching.
Mononoke (not to be confused with Mononoke Hime): The unique art style was what caught my eye, but after watching it for a bit, there was just too much texture for it to be easy on the eyes. And the story wasn't compelling enough.
I keep dropping Cowboy Bebop, too. I really, really want to like that series, but for whatever reason it's just not keeping me hooked.
ME TOO. I watched the first few episodes, but I don't seem to be getting the same enthusiasm out of that show as everyone else :/ I think I'll try watching the movie instead to see if that'll convince me instead.
Oh god. Too many.
Guilty Crown - Stupid characters. Stupid plot. Only thing that I was loving were the animated action scenes, and there were far to little to keep me interested.
Gurren Lagann - Started off too slow, and with too little explaination of the universe; got confused too easily.
Mawaru Penguindrum - Whole series was too slow. And the diary girl was too creepy.
AnoHana - Wasn't feeling it. I almost finished it, but it was more boring to me than a tearjerker.
Mirai Nikki - Almost finished it. But then the alternate universe crap came along and seriously ruined the whole feel of the plot. Rage quitted.
i read dragonball z until the part where raditz came because i never knew what happened before that part
i dropped fairy tail at 269 because the writer didnt want to finish it lol
hell girl bleach (who wouldnt stop), naruto (never really started it--too much ninjas), durarara (forgot where i stopped), inuyasha (too long and monotonous), kekkaishi (the people look creepy and i just hate it like no plot and it was just terrible no offense to anyone here), angel beats, death note (i think i finished it but i was like O.O when i think it ended), lelouch and the rebellion because i hate it as much as i hate death note (not to offend anyone, but l and lelouch were definitely "stroking their egos" i guess)
BUT i finished hellsing (read and watched; i shall one day cosplay as integra hellsing; i have the glasses) and black butler I (watched; boy he's one hell of a butler) which are very good so everyone should go read/watch them! blaugh (if not at least buy me the books so i can forever keep them on my bookshelf kaythanxbai)