Some interesting stats on The Lord Of The Rings from The Rough Guide To The Lord Of The Rings, page 136.
270,000,000 US dollars: to produce the motion picture trilogy.
12,500,000 pLastic rings: used in chain mail in the Fellowship Of The Ring.
1,600,000: times The Fellowship Of The Ring trailer was downloaded within the first 24 hours of its release on the internet.
25,000: the number of cricket fans used to create the war cries of the Orcs during the Helm’s Deep battle sequence in The Two Towers.
1,600: the number of latex ears and feet produced for the Hobbits.
274: the number of days of shooting it took to film the three parts of the trilogy, back to back.
66 lbs: the weigh of Gimli’s armour.
30: the number of pounds in weight Sean Astin had to gain for the role of Samwise Gamgee.
20: the number of hours the Helm’s Deep battle footage in The Two Towers Lasted before it was cut.
16: the number of months the shoot was spread over.
7: the number of months it took to build the Helm’s Deep battle set.
2: the number of hours it took Sean Bean (Boromir) to climb to the top of the snowy mountain set for The Fellowship Of The Ring. Everyone else went by helicopter but Bean is afraid of flying.