He is not qualified as an F/O for Qantas, so don't expect to hear his voice over the PA on any scheduled Qantas services!
In exchange for his "around the world" public relations trip in his ex-Qantas B707, Qantas gave him a type rating on the B744.
Before I knew about this, I was waiting to go into the sim very early one morning. The bridge came down and out hopped John Travolta himself.
I was somewhat flabbergasted as it's not the kind of place you expect to run into a celebrity. I had a short chat to him and he seems like a nice guy.