http://www.reddit.com/r/programming
http://www.altdevblogaday.com/
http://www.genbetadev.com/ (Spanish)
http://android-developers.blogspot.com
Webcomics:
http://xkcd.com/ (Monday, Wednesday & Friday)
http://explosm.net/comics/new
http://mountsaintawesome.com/index.php
http://abstrusegoose.com/
Above all, obviously, Hacker News. I spend even more time than all others summed up.