The Skirvin-Hilton in OKC is fantastic. They just opened a completely refurbished 1920's hotel in the middle of downtown OKC, right across the street from the Bricktown entertainment district.
http://www1.hilton.com/en_US/hi/hote...ahoma/index.do
The place was built at the height of Oklahoma's oil boom. Everything which could be preserved or restored was. The place is spectacular. It was built with over $20 million in public assistance, so it'd better be nice.
I've heard nothing but good things about the service, cleanliness, etc. If anyone here gets "stuck" in OKC, this is the place to stay.