I found it appropriate that this entry was on Roger Ebert's site today when I read it, since it's my last full-time day in this job:
Ebert's little movie glossary
Solo Cardboard Box Rule: When movie characters are fired or quit their jobs, they must walk out with all of their belongings stuffed into a single cardboard box, regardless of how long they've been working there. See Kevin Kline in "The Emperors Club" or Cuba Gooding Jr. in "The Fighting Temptations."
-Alex MacDoNnell, Toronto
Alas, all of my stuff doesn't fit in one box.