I've just seen it too and I really enjoyed it, but wouldn't see it again though, I think I was spoilt by the stage version, although you really can't compare as it's two totally different mediums. I did enjoy it and Anne Hathaway blew me away.
I thought Russell Crowe was a bit like the bloke down the pub letting rip singing but it was just about passable. My friend went to see it a few weeks ago... apparently when he was walking along the ledge and belting out his swansong... someone in the audience apparently shouts out "For God's sake, jump!"
One funny fact... the week before I went to see Les Mis... I was walking along in Bath near Pulteney Bridge. A week later watching the film, Javert was looking down at the three tiered weir I thought to myself 'gosh that looks like Pulteney Bridge in Bath'... I got home from the cinema, googled it and yes it was!