Does a TV audience count?
If it does I was in an episode of Bergerac (Ep 7 series 1 I think) with a speaking part. Big global audience for that still.

Other than that I have done hospital radio so there is no way of knowing of my audience were even alive, a charity stage show for some old folk that involved me drawing the short straw and having to dress up as a woman and thus learn one of those invaluable little life skills few men need (walking in high heels), and at the age of four being dragged up on stage at a large local fair and being asked inane questions by a condescending host who I am told I assessed when he held the microphone to me as "You're not very nice".
( number5 has been fighting tramps and losing., Mon 22 Aug 2011, 8:12, Reply)