Always enjoy pictures of Atlanta and Houston on this subject! OKC's two skylines are separated by about 6-7 miles. The best way to see both in one view is from Lake Hefner's north side which is about 10 miles from downtown.
Downtown (clustered in center) and Northwest OKC (stretched along lake) From OKC Metro Daily Photo Blog:
Another with downtown in the foreground, NW Expressway and other tower clusters in the background, from Russian Sam at SkyscraperCity.
