Podcasts to get around to listening to
http://www.itworld.com/security/112533/15-must-listen-podcasts-security-pros
Monitoring
http://www.rottenbytes.info/2010/05/20/switching-from-munin-to-collectd/
http://www.thegeekstuff.com/nagios-core-ebook/
Other
http://linux.101hacks.com/toc/
http://www.lucaercoli.it/en/mod_spamhaus.html mod_spamhaus is an Apache module that use DNSBL in order to block spam relay via web forms, preventing URL injection, block http DDoS attacks from bots and generally protecting your web service denying access to a known bad IP address.
http://churchm.ag/ Run by some bible basher but seems to be a good resource.
http://blog.cjwdev.co.uk/2012/07/22/advanced-group-policy-video/#more-517
http://openelec.tv/ Open Embedded Linux Entertainment Center, or OpenELEC for short, is a small Linux distribution built from scratch as a platform to turn your computer into a complete XBMC media center. OpenELEC is designed to make your system boot as fast as possible and the install is so easy that anyone can turn a blank PC into a media machine in less than 15 minutes.