Ryan Perkins, 23, left, stands with "30 Rock" actor Grizz Chapman in New York City in this undated photo provided by the National Kidney Foundation. Last June, Perkins, who had been in the hospital for nothing more serious than a broken wrist when he was a kid, donated his kidney to Chapman, 36, who suffered from kidney disease for four years, a condition brought on by hypertension. (AP Photo/Courtesy of National Kidney Donation)

Photo by: Courtesy of National Kidney Donation

Ryan Perkins, 23, left, stands with "30 Rock" actor Grizz Chapman in New York City in this undated photo provided by the National Kidney Foundation. Last June, Perkins, who had been in the hospital for nothing more serious than a broken wrist when he was a kid, donated his kidney to Chapman, 36, who suffered from kidney disease for four years, a condition brought on by hypertension. (AP Photo/Courtesy of National Kidney Donation)