Arnold

The way Arnold Schwarzenegger does biceps curls is amazing. The technique is easy to see here in this video. He keeps one hand on the knee while the other does the curl. These aren't the only arm or biceps exercises he does, of course, but they are ones that can be done by anyone in the gym. The way he does them is inspirational. His entire approach to weightlifting has inspired many to take up the sport, like Charles Atlas before him.