The ones I read regularly:
- http://www.mikeash.com/?page=pyblog
- http://cocoawithlove.com
- http://sigpipe.macromates.com
- http://landonf.bikemonkey.org
- http://mattgemmell.com
- http://kickingbear.com/blog
- http://wilshipley.com/blog
- http://www.dribin.org/dave/blog
