For historical gamers, the Ottoman Turkish Empire has much to recommend. The Turkish armies have some of the most exotic and colorful units you'll find and they bumped up against a multitude of other nation-states during their 500 year empire. For purists, there are abundant historical adversaries and also research materials to recreate armies and battles.
I chose Later Ottoman because I wanted to paint up a colorful army that would be significantly different to run from my other armies. The Turks delivered in spades! I'm not exaggerating when I say every unit in this army shoots, except for the camp. The emphasis on cavalry units means that you get a very fast AND shooty army.
Janissary handgunners: These superior handgunners are a "must have." In addition to rerolling 1s, shooting at an enemy with firearms means that unit tests at -1 during any cohesion tests in the shooting phase, regardless of whether they were actually hit by the firearms!
Azab Archers: These fellows aren't discouraged at all to be using B.C. technology on an A.D. battlefield. They're decent skirmishers and a required unit in the Later Ottoman list. They have a job to do and they do it in high fashion!
This army is composed of Old Glory figures and I found these sculpts to be almost uniformly excellent. They are the best I've seen from Old Glory and were a joy to paint. I'm going to bring this army down to our club games for the next 3 or 4 months and see what I can do in the Medieval era. Only two weeks until I get to put them in battle so stay tuned!