I'm surprised Avatar hasn't been mentioned yet. I'm not sure if I have a favourite at the moment but movies I have enjoyed recently would be:
Avatar as I just mentioned, Skyfall (why did it have to be so epic?!), The Avengers was pretty good, Wreak it ralph (was surprisingly good, loved all the refrences) and recently I saw Legend of the Guardians which kind of blew my mind with the animation.
Oh and Finding Nemo! Old now I know but its still awesome and for me it will always be a classic. (it may have something to do with the fact that I live in Australia and have been to Sydney and the Great barrier reef a number of times, oh and I love fish)
Loved Lilo and Stich as a kid, The first chronicles or Narnia was Awesome, Lord of the rings and Harry Potter (need I say more?) Loved Over the Hedge because it was hilarious and of course the Hunger games, It was down right awesome and I cant wait for the next one.
Wow got quite a list here.