You've seen this before. So have I. I've been looking at it every day for months. Sometimes when I'm visiting with jc in his office, I even sit on it and pedal slowly. Today, however, I sweated my heart rate up to betwen 155 and 175 for about 20 minutes. jc pokes fun at me when I make sudden realizations like this about things he's known forever, but the bike is an extremely pleasant way to maintain a target heart rate.
Maybe I'll do it again sometime.