TheNerdary - web developers blog.
KodApp - A programmers editor for OS X.
SimpleDesktops - I love these desktop backgrounds. Simple, fun, hipster.
Exuberant CTags - Generates an index (or tag) file of language objects found in srouce files that allow these items to be quickly and easily located by a text editor.
And finally (drum roll...) ...
Khan Academy - Making you smarter and keeping you that way! if you want to waste time on the internet this is the perfect place to do it!