Episode V:
The Battle of Hoth
One of my new favorites, featuring terrain modeled and textured in Eovia's Carrara as a backdrop for 3D models of the AT-AT and AT-ST vehicles and the Rebel SnowSpeeders, all originally created in Ray Dream Studio. Although you can't see it from this shot, the interiors of the SnowSpeeders are all completely modeled, including Rebel pilots. I'll have to someday do a close-up shot of a SnowSpeeder by itself so you can see how richly-detailed I created them.
Also, this shot really shows off the power of Carrara's radiosity capabilities, amazing for such an affordable 3D program, to say the least!