In the episode where Radar learns he's going home, Hawkeye has injured his index finger in surgery. One scene shows Hawkeye with a thick white bandage wrapped around his finger, and making a big fuss to B.J. that the digit may have suffered permanent damage. In the very next scene, they're all in Potter's office waiting for Radar. And this finger Hawkeye was loudly complaining about is now miraculously unbandaged. Pretty quick healing!