On impressionism

Impressionists are a mainstay of entertainment. If you have adaptable vocal chords and an eye for detail, then to mimic someone can become very entertaining. A lot of impressionists would give the tale of doing impressions of teachers at school to stay out of the way of bullies, and this is a good place to start when it comes to training your voicebox.
Over the years, we've had some great impressionists. Mike Yarwood was one of the first that I remember, being a leading entertainer in the 70s and early 80s. Later on, we were introduced to the likes of Rory Bremner, who was always too political for me, and more recently Jon Culshaw and Ronni Ancona.
Of course, there are unknowns. In the mid 80s Jasper Carrott (he of Golden Balls) found a young and talented impressionist called Phil Cool. He created a production company with Phil on the books as one of his first employees, and managed to get the BBC to buy a production run with a series called "Cool it." The series ran (apparently) for 3 years, but I have to admit I only remember one series, and the highlight was his impression of Terry Wogan being an alien.
This one's for Debster (and no, it wasn't Rowan Atkinson on Not the Nine o' clock news)
Enjoy.