Nick and Billy are pictured inside The Playboy Club here. They are played by Eddie Cibrian and David Krumholtz, respectively.
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The Playboy Club Season 1 Episode 1 Quotes

Like it says on the door, if you don't swing, don't ring.

Hugh

I picked out the wallpaper for that bathroom, Billy, long before you were here to tell me where to tinkle.

Carol-Lynne