Saw it tonight, thoroughly enjoyed it!
Review at my blog
http://cool-stuff-you-will-like.blogspot.co.uk/2012/06/rock-of-ages-movie.html
I hate musicals, the film was cheesy as hell, most of the "humour" was obvious and for the most part fell flat, but despite all these factors working against it, I actually enjoyed the sheer exuberance of it all.
A case of so bad it was good!
And it did make me feel nostalgic for the period and my glam metal days, before grunge tore up the rule- book.