This week's program looks at the unlikely evolution of an unexpected global comedy hit.

Christiaan Van Vuuren was devastated when he was diagnosed with drug resistant tuberculosis and forced into hospital quarantine for six months.

To pass the time he started making humorous video clips documenting his experiences in the isolation ward.

The videos went viral around the world on YouTube.

Now Christiaan and his brother Connor are being courted by some of the big players in the film and TV industry...