Surly Steamroller dawg.

http://www.surlybikes.com/bikes/steamroller_complete/

Thats what Im riding and I couldnt be happier. If you go to a local bike shop (LBS) you can probably get a good deal on one especially if you get one of last year's models.

Speaking of LBS, ignore almost all the advice in this thread other than the "check out your LBS" stuff we're spouting off.

A bike isn't a toaster or a tv or a steel belted radial... its something you gotta fit and check out in person. Having a pro help you find the right fit will go a long way. Buying from that pro will also pay off in a big way because those pros are going to be building (or better yet helping you build) your bike for you. They'll also be showing you how to change tubes and tires, adjust chain tension, and very likely selling you the parts you'll be needing to keep your bike up and running for years to come. The best way to establish a solid relationship with your LBS is to buy your bike from them.

Buy from your LBS out of respect and reap the benefits of good karma. If that's not enough reason for you then maybe cheap/free maintainence and parts will help you justify spending a little more up front.