I cast mine for the line "The Spiral Strikes Back!". Perhaps I loved this line over more popular one due to its strong visual connotations. No one would miss the reference to spiral logo of Debian GNU/Linux project and the Star Wars Episode V: The Empire Strikes Back has strong following in the community and elsewhere.
Right now the slogan "The Universal Operating System is leading the poll. Don't you think that human brain is supposed to be the true universal operating system on earth. Duh! :P