In 2002, a surgeon in our group decided to begin doing bariatric surgery. He had been trained in open bariatric surgery during his residency. He assisted on 14 open and 19 laparoscopic gastric bypasses performed by the authors. He performed, as primary surgeon, 20 open and 21 laparoscopic bypasses with assistance of the authors. He then began his own series performing open and laparoscopic surgery with the assistance of a surgical technician who had assisted the authors with over 1,000 laparoscopic bariatric procedures. During his first 100 laparoscopic gastric bypasses, he had no deaths, no leaks, and no pulmonary emboli. Early complications consisted of one wound infection. Late complications were one stenosis at the gastroenterostomy, two incisional hernias, and one internal hernia.