Jon does a bit of acting.

Here is a list of his credits:
a scientist in Itch (ABC TV)

a priest in feature film Needle (horror movie shot in Perth)

a hard-core AC/DC fan in Thunderstruck

a badly beaten and dead dero in Justice (court-room drama)

a mad environmental polluter in Bush Patrol

and a one-armed gambler in The Edge of the World (documentary about life and work of Tim Winton)

Here he is in TV ads:

Gryphon Doors

DB Dental