Whoa there, Rommel! "LOTR has hardly any changes apart from cutting Tom Bombadil"?!?! There are dozens of descrepancies between Tolkien's classic novel and Peter Jackson's films, mostly resulting from the director's personal interpretation and alterations made thereby. For a rather extensive list, see this link:
http://jackflannel.org/lotr/
He calls it a "Nit-picker's Guide to The Lord of the Rings," and not without reason; some of the descrepancies are... well, very nit-picky, I suppose, but others are fairly major and several regard vital plot-points in the original novel. But don't get me wrong, guys, I love Jackson's films as much as the next guy.