Copplestone Castings - Probably the best 10mm line of LOTR like figures on the market today. They have a huge selection of Orcs, Humans and now Dwarfs.
Magister Militum - Carries an array of 10mm fantasy figures. Their greater orcs seems to fit in nicely with Copplestones.
Eureka Miniatures USA or Eureka Miniatures Australia - Eureka Miniatures produces the best 10mm Mammupach, with howdah going. It is simply awesome. There hobbits show a lot of promise, but their elves and humans are much smaller than Copplestones.
Tajima1 Miniatures - Makes a set of very cool 10mm Fantasy - Evil men of the East. These would fit nicely in with the Eureak Mammupach.