Russian T-34 - A very good looking and effective tank. The best in WW II. Sloped armor, 76.2 mm gun, 19” treads, V-12 diesel, 500 hp engine.
http://en.wikipedia.org/wiki/T-34
http://upload.wikimedia.org/wikipedia/commons/3/39/T-34_Model_1940.jpg
http://topicstock.pantip.com/wahkor/topicstock/2010/02/X8897808/X8897808-vote1.jpg
The Russians had a knack for designing nice looking tanks. I’ve always thought the T-72 had good lines as tanks go.