I recently discovered "Bible Girl," who writes for the Dallas Observer. The only way to subscribe to her blog appears to be subscribing to ALL the Observer blogs, which is a bit of a pain, but I'll manage.
The Observer is a "secular" newspaper, apparently similar to Atlanta's Creative Loafing, and Bible Girl is a Pentecostal. That alone should tell you something. She's also an engaging writer with a conversational, "take no prisoners" writing style. Check out her recent (May 4) column on race relations in the church, here. (I'd reprint it here, but the formatting gets all messed up, and I don't want to spend 30 minutes making something pretty that you can find on you own in 0.3 seconds.)
And here's a link to her collected essays for the Observer. Enjoy. (Be careful what links on that page you click on, or you'll be reading something that's not by Bible Girl and thinking it is. The Observer could get a bit more organized, methinks.)