Linux / UNIX: Ping a Block of Hosts (netblock) http://www.cyberciti.biz/faq/linux-unix-ping-a-block-of-hosts-netblock/
25C3: Hackers completely break SSL using 200 PS3s http://hackaday.com/2008/12/30/25c3-hackers-completely-break-ssl-using-200-ps3s/