You know, it's odd in a way, but every time I find some movie I see trailers and advertising for, which my senses tell me I'm going to just hate, I usually (if perhaps not always) end up totally loving it.
Despicable Me was a definite case in point. I saw the trailers and thought
"what a dumb idea...this looks like it's gotta suck." I really avoided it, and didn't bother to go to see it in the theater. It wasn't until a year later, maybe, that I finally decided to chance it, and I rented it through Redbox (I think). And fell in love. XD
This is how it's usually happens for me--with animated and live-action movies. A few examples would include Despicable Me, The Croods, Guardians of the Galaxy, Galaxy Quest, the Percy Jackson & The Olympian movies, etc.