CSI: Crime Scene Investigation, Season 4

[Nick sees Grissom examining the Magic Fingers]

Nick:
Haven't you ever seen one of those before?

Grissom:
Not in person, no.

Nick:
Magic Fingers. Twenty-five cents for 15 minutes of vibration. Died a slow death in the '70s due to vandalism and seedy connotations. Good for sex. Good for sleep ... too.

Grissom:
Good for us. Given the killer's appetite for sexual persuasion, maybe they blew the circuit. Overloaded it with coins.

Nick:
And their prints on those coins.