http://www.bradreese.com/ - A water-coolerstyle discussion and forum for Cisco CCIEs
http://ardenpackeer.com/ - "Network Fu" tutorials (excellent series on conditional route injection with BGP)
http://jonsblog.lewis.org/ - Notes from a respected former colleague (and creator of a well known RBL)
http://juniperhacks.wordpress.com/ - Honorable Mention - An inactive, but still useful, collection of JunOS hacks
All of them worth checking out!
http://ardenpackeer.com/ - "Network Fu" tutorials (excellent series on conditional route injection with BGP)
http://jonsblog.lewis.org/ - Notes from a respected former colleague (and creator of a well known RBL)
http://juniperhacks.wordpress.com/ - Honorable Mention - An inactive, but still useful, collection of JunOS hacks
All of them worth checking out!