More than once I've heard companies described as "the best first and third job you'll ever have". The idea was that if you stuck around nothing would happen, but if you left and came back you could jump a couple of grades ahead.
Today just happens to have been the last day for someone who had been with the company for several years. The joke is that they'll be back in a couple years in a much better job. At least two people in my org chart have done that that I know of.
And now today Glenn Reynolds links to this. Hmmm.