Well, they had an OKC location, 1980s at least. Meridian south of I-40. I think the location is a Chili’s or a Harley Davidson Bar & Grill now.
I was just about to open a thread, but then several folks posted about an apparently similar restaurant to Molly Murphy’s: Magic Time Machine.
There are two locations: San Antonio and Dallas (though I’ve only been to the SA site). I first went there in 1984 during a business trip to Lackland, and have been pleasantly surprised that they’re still open - I visit every few years and go there for old-times-sake.
It’s not premium food, but the overall experience is fun, especially if you are with someone who has not been before.
The Casa Bonita Episode of South Park is on Comedy Central right now!
According to Wikipedia (fwiw), only the Lakewood, CO location is still in business.