just watched it last night finally (after getting to the cinema twice to find it had sold out) and what can i say apart from Oh My God!!!
The only negative things I can say about it is that the cuts to Merry, Pippen and Treebeard are very badly timed... I mean one minute theres intense battles at helms deep which are just amazing, and then you spend 5 minutes in the forest listening to those 3 bantering.
talk about killing momentum.
also sam and frodo have a few too many nauseating "chummy" scenes. aside from that its all good imo:
Golum is incredible, the helms deep battle is incredible, liv tyler looks incredible... shall be seeing it all over again shortly