First off, I was super iffy on the casting. However, I actually enjoyed most of how the characters are portrayed! While I agree that Jennifer Lawrence didn't exactly look like she was starving like Katniss should have, but I think she did a great job at acting like Katniss. Even in the books, Katniss was never meant to be the most likeable character. I, however, do wish they would have shown a bit more of Rue's relationship with Katniss. A few of my friends didn't grasp the closeness between Katniss and Rue, which was a bit saddening. Their relationship was one of my favorite aspects of the novel.
I wasn't super fond of Gale (though, truth be told, I didn't really like Gale in the novels either). It could have been because he didn't have a huge presence in the movie, but I'm not sure if I like the actor that is playing him. I guess future movies will tell! However, surprisingly enough, I really liked Josh Hutcherson's acting and he did a fabulous job as Peeta. He seemed really sincere and acted, in my opinion, like Peeta! There were a few actors that I had in mind as my perfect Peeta, but thinking back, I don't think they could have pulled him off quite like Josh did.
Overall, the movie was fantastic and I recommend it to everyone. I haven't found a friend who did not enjoy it! I still really enjoy the novel (more than the movie) but I think the movie definitely did a decent job. Oh! And my friends and I dressed up for the release! I used my Katniss costume from Dragon*Con and my friends dressed as tributes and other characters. We were pretty cool. I cannot wait until Catching Fire hits big screens!