Derek at woodenbases always does a good job, bloody quick too AND he does custom orders. You\'ll see a couple of bases of his at the GD (including one BIG custom one

).
There\'s also:
http://www.planetfigure.com/forums/showthread.php?t=30909
Steve at SKMiniatures is very helpful, not such a great range though. What he has is very nice looking though.