The geniuses over at Deeper Understanding have just dug up and re-edited Liberace's Valentine's Special from 1979. It's just as bizarre and slightly depressing as you might imagine, but look! Sandy Duncan and Lola Falana! And it's in Las Vegas. And he goes through the audience and flirts with the old ladies and makes an awkward joke to one of them about her box.
Also, maybe it's a testament to Michael Douglas's performance in Behind the Candelabra, but it's now hard to watch this without thinking of him doing poppers and having sex with Matt Damon.