Although his Terry Wogan, Attenborough and Morgan Freeman voices are remarkably good, this show isn't merely a vehicle to showcase his vocal talents - it's an intriguing sitcom in its own right.
Watch two clips from The Mimic below:
Based around an everyday maintenance man called Martin, whose only talent is his exceptional ability at impressions, this new series has an original and smart concept.
Mynott, Jo Hartley, Neil Maskell, Jacob Anderson and Sharon Duncan-Brewster all star.
The Mimic starts tonight (March 13) at 10pm on Channel 4.