I was going to talk about..
Unless this is a clever ploy to introduce a subject we didn't expect and play with our subconscious then we (the audience) really don't care what you were going to say... or even worse we may wish you'd said it, and you have only given us a teaser..
"I was going to tell you this really amazing story about how I got here today, but I figured I should stick to the facts.."
(This would make me go arghhh, I always want to hear an amazing story over facts)
"I was going to start with a joke but I realized I wasn't funny.. "
(thanks for pointing that out, now I really want to listen to you!)
You get the hint.. not the dramatic 'I must listen to this' audience reaction you want.
