Law and Order Theory

It's my belief that every actor/actress in hollywood has at some point guest starred on Law and Order (of any variety). Just in the past few days, I've run across: Lewis Black, Philip Seymour Hoffman , Maura Tierney, Greg Germann, and Lisa Nicole Carson. There are of course many more I've run across through the hundreds of L&O episodes but it just really struck me the other day.