The suggestions for Red Box mini's is an excellent one, they're fantastic mini's with some of the best sculpts in the business, in mu opinion. They are also closer to the GW LoTR scale than other companies ranges...they are metal though...if you prefer plastic, the Gripping Beast and Warlord Games guys offer some nice box sets of plastic, as mentioned above.
There is also one other very good option coming out very soon, and that is a set of Plastic Northern Barbarians for the game called Frostgrave. You get 20 multi-pose miniatures with a variety of weapons and equipment in one box set. These are due out this coming November.
Here is a pick of 3 mini's made up out of that box set, they'll be your usual 28mm scale, so will look ever so slightly bigger than a lot of the LoTR range;
