I just downloaded the soundtrack off of iTunes the other night (mostly after reading all the comments on this thread!), and I like it overall. When I first heard Supermassive Black Hole (on Stephenie's website), I didn't even listen to the whole song, because I didn't like it...but once I heard it in the movie, I was like: "hmm, this song is kinda cool" so when I downloaded the soundtrack, I listened the whole way through, and now I like it a lot (enough to be humming it everywhere I go!!
I also fell in love with "Flightless Bird"...I just love the music, it is so slow and mellow, and sweet. Perfect for the dance at the prom. Another one I have stuck in my head lately...
I like the music of Rob's songs (the guitar...*sigh*... I love the sound of guitar...), but I can hardly understand any of the words (thanks to someone who posted earlier saying that Rob writes the music first then tries to match words that fit later, and kind of mumbles them...that makes so much more sense!)
Bella's lullaby was pretty. I wonder if SM gave the composer the description of it from MS (how Edward developed it to be unbearably sweet, but then ending at a really sad/hovering note, because at the time Edward couldn't see a way of resolving his love for Bella)? Interesting to think about.
I love Linkin Park too...their Hybrid Theory CD got me through middle school! So their song is great, and I was so happy when I found out they were one of the bands that inspired SM, because they inspire me too!