Bit from a documentary about cloning?

• Delayed show of surprise
• Surprised reaction ... or a hint to what can precede both halves of the answers to the starred clues
• Redo of a movie scene?
• Second look
• Delayed reaction
• Comic delayed reaction
• Surprised second look
• Greatly increase receipts: that brings surprised reaction

Wikipedia Word definitions in Wikipedia
Doubletake was a BBC comedy programme, created by Alison Jackson . It made extensive use of celebrity look-alikes playing their doubles in apparently embarrassing situations, seen through CCTV cameras and amateur video, using distance shots and shaky camera-work ...