I stumbled across the work of the super-talented Brandon Palmer who operates under the banner of Grey Matter Musings. He paints armies. Big armies. Extremely well.
Check out his site to see the full range of his portfolio. His colour schemes are consistently pleasing, restrained and often humorous while his detailing is fantastic. He uses an airbrush and achieves amazing results.
I found out about his work as he is offering a DVD which profiles his techniques through CMON.