Personally I highly recommend any Corsair power supply. They are all rock-solid and they have amazing customer service too. I use a Corsair HX620 with my DP67BG and I have never had any problems with it.
IF you can still find one, and IF you get a good one, the Corsair 950TX is doing the job for me. Have a DP67BGB3,and two eVGA 560Ti's on it and so far running flawlessly. I bought this PSU months ago, and was about to buy the board when Intel recalled 'em all, so I'm not sure if Corsair still has them available.
Here is the link, which must be "official source":
In any case, after selecting particular PSU make a search over intel community forum or google chosen PSU for compatibility issues.
It is not definitely clear and there was no answer from Intel about why some random PSUs do not work with DP67BG motherboard.
I personaly have Corsair HX750w PSU and it works fine with my DP67BG (B2) motherboard.
In addition, I can inform you that this http://www.newegg.com/Product/Product.aspx?Item=N82E16817207015 PSU did not work with DP67BG B3, as my frend tuned on a new build. PSU itself was fine - it powered on other computer, but not this new build with DP67BG B3.
I don't understand why a power supply should be "compatible" with a motherboard. Is it related to the current (or lack of it) in specific rails?
By the way, I have a DP67BG(B3) and it works "almost" perfectly using a Seventeam 550P-AM. "Almost" because there are problems with PCI compatibility, I don't know if a "wrong" PSU could cause them.