One of the slashdot comments I found interesting, though:
I have it on very good authority from people at the V.P. level inside IBM that SCO, and it's[sic] executives, are slated for personal destruction. When they sent letters to IBM's customers threatening lawsuits becuase[sic] they did Linux business with IBM, they crossed the line into open warfare. And no prisoners will be taken.
Never, ever, threaten IBMs customers' desire to do business with IBM. They've got billions to spend to destroy you, and their lawyers walk six inches off the ground.