You've probably seen television commercials from Apple and Microsoft touting their operating system. From Apple's ubiquitous "I'm a Mac" to Jerry Seinfeld to Microsoft's "I'm a PC" retort, operating system commercials have been flooding the airways. Except one OS has been notably absent – Linux. Now the Linux Foundation wants in on the action. The group is asking people to submit video ads that run 60 seconds or less, with the theme "I'm Linux."