1. Think Geek - Toys for Geeks.
2. Curious Cat Science and Engineering Blog - Focused on science and engineering: education, research, economics, gadgets and innovation.
3. Engadget - Extremely popular blog with "obsessive daily coverage of everything new in gadgets and consumer electronics."
4. arstechnica - "Original news and reviews, analysis of technology trends, and expert advice on topics ranging from the most fundamental aspects of technology to the many ways technology is helping us enjoy our world. We work for the reader who not only needs to keep up on technology, but is passionate about it."
5. Gizmodo, the Gadget Guide - "don't listen to us, we're idiots. We do make our living staying right on the hemorrhaging edge of gadgetry, though, so even if we say something totally boneheaded, we'll at least usually be the first to say it. And that's something."
6. Techcrunch - edited by Michael Arrington. "Dedicated to obsessively profiling and reviewing new Internet products and companies. In addition to new companies, we will profile existing companies that are making an impact (commercial and/or cultural) on the new web space."

Related: Curious Cat Science and Engineering blog