Check out Technorati's Top 100 Blogs, based on their inlink-based methodology. As such, it's not surprising that you'll find a lot of political blogs, blogs-for-bloggers, and techie/webby/gadgety blogs in here amongst other weird/interesting/off-the-wall blogs in niches you've never thought of. Even the 100th rank has been linked to over 3,000+ times.