Thanks to Emilly Orr, I spent my evening in Retrology, a sim of 1940s-60s retro gear, nightclub, record store, theater, and apartments. I wallowed in nostalgia for quite some time.
The sim was fairly crowded and, consequently, fairly laggy. It could be that Miss Orr has a large readership, all visiting at the same time. :) A lot of cute things, but my willpower was strong. For now.
Of course, if they wanted to be authentically retro, the gasoline prices would be about a quarter a gallon. Someone wasn't quite in theme here. :)