Interesting blogs exchange

I want to find more interesting blogs to read. Do you have an interesting blog or do you know one? List it with a description of why it's interesting or worth reading.

I'll start by listing 6 blogs I find interesting:

• Good coder's code, great reuse: Peteris Krumins' blog about programming and hacking. Lots of goodies, especially posts on Vim and math.
• Well Placed Pixels: A visual record of beautiful software (it mostly showcases iPhone apps).
• High Scalability: War stories on scaling. For a programmer reading about scaling is like reading an erotic novel - or not ;)
• Andrew Chen's blog: Andrew has posted tons of great stuff on viral marketing, startups and product building. Worth a read.
• Kaliber10000 or k10k.net: One of my goals is to become better at design and art. k10k is a window into the design world.
• Zen Habits: On of my favorite blogs on productivity.

Now it's your turn. What blog do you find interesting?