Other sites

[clint]

What other sites do you visit related to illustration or design?
I have a couple daily sites I go to, not much technical illustration content but definitely inspiring.

http://blog.iso50.com/
http://www.draplin.com/
http://www.processrecess.com/
http://www.houseind.com/showandtell/

[JamesProvost]

Art + Design:
http://www.drawn.ca/
http://www.illustrationmundo.com/wp/
http://www.swiss-miss.com/
http://www.yankodesign.com/
http://www.coolinfographics.com/blog/
http://infographicsnews.blogspot.com/

Never stop learning:
http://cg.tutsplus.com/
http://psd.tutsplus.com/
http://vector.tutsplus.com/

Software + Hardware:
http://lifehacker.com/
http://www.macrumors.com/
http://blog.makezine.com/

[rhymeswithpuck]

tons, though some current regular visits are:
http://www.solidsmack.com/ (solidworks news/tutorial/fun blog)
http://www.core77.com (assorted industrial design-related news and forum)
http://www.escapefromillustrationisland.com (articles/podcast geared more towards freelance non-tech illustration)
http://gurneyjourney.blogspot.com/ (james gurney of the dinotopia books, lots of info on technique, color, etc.)

i actually haven't seen any sites dedicated to technical illustration, outside of this one, not counting personal portfolio sites.
EDIT:
I also visit kevin hulsey's site http://www.khulsey.com for tutorials and other information/inspiration/visual ass-kicking.