For those outside of Australia, the Today Tonight show is a current affairs tv show.
Also for those outside of Aus it is the kind of "current affairs" program that would be better classified as "light entertainment" which often includes "mostly fictitious" sensationalized stories (that are typically biased).
So I'd expect the major focus to be on SR and the FBI rather than anything of any depth about Bitcoin itself (for decent current affairs in Aus you would be looking for something broadcast on either ABC or SBS).
Of course if I'm proved wrong and they present a clear and balanced piece of journalism about Bitcoin then I would be very pleased.
Yes, I hope it's good publicity for Bitcoins and you never know, it might just spur some other businesses to take the plunge and accept BTC.
It's been a while since I have been to The Old Fitzroy, quite an eclectic crowd I seem to remember and I can imagine paying for drinks with mined coins would be pretty satisfying. It's almost free beer but not quite