Originally Posted by Myrkrel 
Sounds like it's true to the source material then - the book was full of deus ex machina, if I recall. Or have they meddled with the plot and added even more?
Of course, there are certain changes that they did, which are different in the book.
Spoiler
I guess the biggest thing is that they turned Azog into the main antagonist of the movie, when I remember him being killed in the book, and some other orc was the leader.
And they turned a couple of the slow scenes in the book, into action scenes. I particularly remember the trolls scene being slower, with everyone stuffed into sacks, and Gandalf throwing his voice around the trolls, trying to keep them arguing until the morning light.
Another thing which the whole internet seems to be in an uproar for is the way they did Radagast the Brown. Personally, I loved the way they handled him. Might be a bit cliche for an eccentric nature-loving character, but I don't know. He was just amazingly likeable. I loved his rabbit sled.
And I also loved the addition of Dol Guldur, where Gandalf will be heading to in the future movies. Things from the annexes of the LOTR will be very interesting.
What I can't remember from the book is, does Gollum have any other role to play in the other movies? (did he get captured in Mirkwood or something?) I can't remember. But if he did, I hope they explore all of that in part 2 or 3.