As good as Hugh Jackman sings, we came home and using the wonders of YouTube, brought up the version of Bring Him Home sang at the Les Mis 25th anniversary. It gives you perspective of just how good the singing can be. By the way, if you haven't ever seen the 25th anniversary show for Les Mis, PBS airs it every year as part of their TV fundraiser. It's done by a collection of the best-of-the-best performers from Broadway and around the world. You can also see all two hours and forty minutes of it here.
An interesting little side story: Colm Wilkinson was the original Jean Valjean in Les Mis on Broadway and many consider him to be a key reason the show was so successful. In the movie he was cast as Bishop Myriel, who steers Valjean towards the path of righteousness. Pretty cool that they found a spot for such a talent.
My bottom line: if you hate movie musicals, don't go. If you like Les Miserables on stage or at least tolerate movie musicals, this is about as good as it gets. It shows a lot better on the big screen and a good sound system than it ever will on your TV.