You don't need to support alias domains. They redirect to *.stackexchange.com domains, anyway.
This will match all current Stack Exchange sites. It uses @match for smarter domain and path wildcards. @match also works better for Chrome:
// @match *://*.askubuntu.com/*
// @match *://*.mathoverflow.net/*
// @match *://*.onstartups.com/*
// @match *://*.serverfault.com/*
// @match *://*.stackapps.com/*
// @match *://*.stackexchange.com/*
// @match *://*.stackoverflow.com/*
// @match *://*.superuser.com/*