This is a clip from the 1974 TV show The Magician. The old man at the bar is a famous, but rarely recorded, old magician named Dai Vernon.
The Magician Works His Magic
The Magic Castle, located in Hollywood, is the capital of tricksters, hucksters, and sleight-of-hand artists. If a magician performs there they can perform anywhere. It's also an incredibly swanky place to impress a lady, at least if you're confident enough to start off a date with "open sesame."