The Last Airbender - Sokka wasn't funny, Zuko lost his charm, Iroh wasn't the funny old Firebending Master, Zhao wasn't fiercer, Aang wasn't funnier and acted younger, Katara lost the sunny-ish disposition. And the penguin slide was gone! WHY THE PENGUIN SLIDE! I hope, if they make a sequel, that it will actually be worth my two cents. And they really should hire more Asians. Katara should've been tan, not pale. Aang's baldiness should've been near-impossible to spot. Zuko has to be fairer... or paler. Iroh should be wiser and jolly, and Sokka has to be funny!
Tekken - No, just no. Jin's love interest isn't Christie Monteiro. It was revealed in Tekken 6: Bloodline Rebellion that Xiaoyu has a crush on him, and should've been that way! Christie is more of Eddy Gordo's almost-love interest. Geez... And Jin, a teenager? SERIOUSLY?
Twilight, New Moon, Eclipse, Breaking Dawn Part I- Oh. God. Forgive me, Twilight fans, but I have to place this here. I like the whole forbidden love thing, but what made me rip my hair out was the obvious idiocy. I like the effects, yes, but the movie was nothing more than a bland waste of money. And so are the books, but that's a different story.
Harry Potter and the Half-Blood Prince - I know, I know. This should've been a blast to watch, but no. It failed me. It was disappointing. Change its title to "Harry Potter and Ron's Love Story", and you'll get what I mean. I was so disappointed that they revealed that Snape was the Half-Blood Prince abruptly. I mean, our reaction was all like, "Wait, what? What did he say? Who was the Half-Blood Prince again? The heck is going on?!?". Seriously.