Since its Vegas with so many chapels where Elvis impersonators can marry you, I think an oh so twisted version of this should have survived the 2077 war. A cult of Telvis -- white leather vested people chasing you with pistols (like the ones he used to destroy tvs with shows on them that he didn't like) for your jars of peanut butter, or because you didn't go to their casino show or because you walk by them with the wrong radio station playing on your PIPBoy, etc. Kill them, kill for them, etc. Too many comic moments to miss.
The Church of Telvis, I like it!
I also think Michael Jackson should also have a church, too, not very 50's but then again, New Reno was about as far from the 50's as you could get in the Fallout Universe and I still loved it. Myron, probably the most memorable talking head in FO2, was straight out of an 80's teen comedy flick and I couldn't stop laughing at his antics in response to every situation he was confronted with...