[from the movie "Star Wars"]
1. The AT&T corporate logo, which appears on computers sold by AT&T and bears an uncanny resemblance to the 'Death Star' in the movie. This usage is particularly common among partisans of BSD UNIX, who tend to regard the AT&T versions as inferior and AT&T as a bad guy. Copies still circulate of a poster printed by Mt. Xinu showing a starscape with a space fighter labeled 4.2 BSD streaking away from a broken AT&T logo wreathed in flames.
2. AT&T's internal magazine, 'Focus', uses 'death star' for an incorrectly done AT&T logo in which the inner circle in the top left is dark instead of light -- a frequent result of dark-on-light logo images.