Hell Yeah, buy this!
As far as an OST goes, its classic all the way. There is a wide variety of styles in there, something that will definitely appeal to everyone, from the romantic to the dance, from the modern to the 80's!
Seeing the movie just makes this more magical. I know I'm making it sound corny, but truth be told, it's not often you can catch a film star, teach them to sing as well as the professionals, and then in the same time, conduct a chemistry with said people that makes the whole experience believable.
If you want to know the best songs- the Demo version of 'Way Back Into Love'- Hugh Grant, Drew Barrymore, has the classic humour of Hugh Grant and the raw voices of both parties, and it makes for a very interesting song, and 'Buddha's Delight', sung by Haley Bennett, is a very refreshing take in a modern style with a voice that falls somewhere between Jessica Simpson and Britney Spears. Following this... Who could possibly forget the fantabulous 'Pop Goes My Heart!'? An 80's spoof that does its job by getting right into your head and staying there!
Yeah- all in all, a very worthwhile purchase, one that will be on my computer for some time to come...and go see the movie!!!!!