Xkcd
"Compiling" => http://xkcd.com/303/
SQL exploits => http://xkcd.com/327/
"Security" => http://xkcd.com/538/
"airplane security" => http://xkcd.com/651/
Something is wrong on the internet => http://xkcd.com/386/
"tech support" => http://xkcd.com/806/
"getting relatives to solve IT issues" => http://xkcd.com/763/
"ip adresser" => http://xkcd.com/742/
"academia vs. business (hint: google tooltip hex tallet)" => http://xkcd.com/664/
"Extended mind (Wikipedia)" => http://xkcd.com/903/
"Counting sheep" => http://xkcd.com/571/
"Correlation" => http://xkcd.com/552/
"Windows 7 versus Vista" => http://xkcd.com/528/
Very inside joke => http://xkcd.com/468/
Very inside joke too => http://xkcd.com/467/
Sciences => http://xkcd.com/451/
Girls and math => http://xkcd.com/385/
Nerd sniping => http://xkcd.com/356/