I absolutely loved Rey for the first half, when she was a plucky, resourceful scavenger. And then she went all 'Force Unleashed' on us. I guess you can't be important in SW unless you're a super special snowflake.
It was quite amusing how she walked out of prison, though. (I wonder who her mother was. Her father was probably Luke, but who was her mother?)
I thought Finn was the most interesting character. He's definitely not anyone special, but he's there, compelled to step up and do the right thing. When he picked up that lightsabre against Ren at the end, he knew it was going to end very badly for him. But he did it anyway.