Lord Of The Rings!
There is a range of Citadel Miniatures that are not technically Warhammer and yet a great many of them are perfectly fit for hard core Oldhammer. The Barrow-Wights above for instance are all featured in my own undead army as are plenty of Dead Men Of Dunharrow. Check the full range out here: http://www.solegends.com/citlotr/index.htm