BSJH - Theodore Roosevelt on Horse - Front
An articulated horse is much better at conveying action than Lego's standard, static one. This design is mostly stock lego. Several detail parts from Brickarms are used and the delightful BrickForge reins add the final touch.
This rider is part of the Battle for San Juan Hill vignette: www.flickr.com/photos/brian_williams/5779813122/