We use Nagios, and I get SMSs when something happens. Lots of other sysadmins also get texts. However is there any clever / cool other ways people have gotten nagios alerts?
You might want to take a look at a project that we're working on called PagerDuty. It sends phone call and SMS alerts in response to incoming email. Quite a few of our customers use us with Nagios.
We've got some other fun features too: automatic escalation (your co-worker gets the call if you're unable to pick up) and on-call rotations (automatically route calls to your phone this week, and to your co-worker next week).
We're always looking to add more features to PagerDuty, so please let us know what you think!
Big red police light, SMS, traditional email, jabber message and a phone call, all depending on SLA on each server. Silent phone calls from a machine at 3am however is never a good thing... Especially when the machine has the audacity to come out of that state as soon as you drag your arse out of bed.