zoglin: elvis was the hottest thing in show biz. he changed rock 'n' roll. mckee: your heart's pounding, and you're getting this build up. he was at the top of his game again. ♪ announcer: friends, viewers, countrymen, lend me your eyeballs. las vegas has always been able to grab you by the lapels and pull you in. little: it's glitz and glamour, entertainment, gambling. it's a place that's like no other. announcer: with time on your hands and money to spend, your thoughts may turn to las vegas. anka: by the late '60s, vegas started to figure out, "what else can we bring here?" woman: love you, elvis! thank you, dear. ♪ elvis was, like, an alien-like thing. he was so unique, so charming, and so hot. they saw that sex and debauchery sells, so let's do sex and debauchery. [ chuckles ] ♪ ♪ ♪ luck, be a lady tonight ♪ ♪ ♪ luck, be a lady tonight ♪ ♪ tonight ♪ ♪ luck, if you ever were a lady to begin with ♪ ♪ luck, be a lady tonight ♪ ♪ ♪ luck, be a ladyyyyyy ♪ ♪ toniiiiiight ♪ the stars of the las vegas shows may be frank s