[dancing spawn of ungoliant]

This is not just a girl's opinion but they need good-looking characters for some main roles. Well, I don't mean that movies without some gorgeous guy/gal couldn't be touching and excellent films but they don't draw so much audience. For example: why do thousands of teenyboppers go to watch LotR?!? *coughOrlando&Elijah&Viggocough*
And unfortunately film makers do care a lot about ticket sales. So they should (IMHO) cast some handsome (but not too well-known) guy for Bilbo.

Andy Serkis just for laughs should play one of the elves in the trees singing when the group arrives in Rivendell.

Oh, I'd love to see that It would be nice if he could do the voice of Smaug too.