Despicable Me wasn't as good as I was hoping. The early trailers, especially the usage of the Hitchcock-like silhouette, made me expect a quirky, more adult CGI film, perhaps along the lines of the first Shrek. Instead, it's a very straightforward, childish film. As many of the best child-oriented films illustrate, though, that's not necessarily a bad thing, and it certainly isn't with Dee-Me. It's loaded with good slapstick, generally good voice-overs, and great character design. The story was very slight, and lacked drama, which I actually blame on poor story blocking. A solid 10-15 minutes of the early film was unnecessary and would have been well-served with simply jumping into the action and letting the characters reveal themselves throughout the rest of the film. This would have allowed them to better explore the rivalry between Gru and Vector, which makes up a very small aspect of the film, considering that the trailers made it seem like it was going to be a primary point.
About those trailers, I'm assuming that the direction of the film was changing wildly as production went on considering that each trailer presented an entirely different picture of the film. The first trailer made it seem like Gru stole the Pyramid (he doesn't), the second made it seem like Gru was trying to recapture his crown as #1 supervillain (which he's not), and only in the third trailer do they finally introduce the children and the painfully merchandiseable "minions," that comprise the biggest chunk of the film.
Oh, and, is it a requisite that all 3D films have a roller coaster scene? Seriously?