I really enjoyed this one, at the not-so-tender age of 66. The story is fascinating, most of the characters are well developed, and the visual FX are great. Probably a little too gory in a couple of places for younger kids, but definitely a must-see fantasy for all older ages.
My biggest regret is that, primarily because of poor box-office and so-so reviews of this one, New Line has no immediate plans to film the rest of the trilogy (although they do already have the rights, if I remember correctly). I for one will eagerly look forward to those, if they ever do materialize ... hopefully if DVD (and any other home media) sales are good, that'll help overcome New Line's pessimism.