Ian Roberts is a South African actor, playwright and singer best known to television viewers for his roles in the drama series Arende and Snitch, and as the character Boet in a series of long-running advertisements for Castrol motor oil. Roberts was born in Fort Beaufort in the Eastern Cape and raised on a citrus farm near the town. He attended St. Andrew's Preparatory School and St. Andrew's College in Grahamstown. After completing high school he performed his compulsory national service in the South African Army, which he completed in 1971…