I was doing some research on commercial Linux devices and found something interesting:
Worldwide Printing System - Cisco, a $21 billion maker of routers that tie the Internet together, signed a major agreement with Microsoft regarding support for Active Directory. As part of that deal, Cisco management declared Cisco an "all Microsoft" company.
Unfortunately, Cisco's IT staff couldn't get network printing services to work right through NT servers (and you can't say Cisco engineers don't understand networking, now, can you?). Cisco's worldwide printing services now run on Linux.
Some Companies Using Linux
I don't know how old the article is but I just found it funny.