Wow! This thread is from a long time ago, and somehow I just stumbled across it again.
That presentation at the 2012 Fincon was a LOT of fun. Also, I was wrong about my predicted approach: I ended up planning that one out in detail and practicing the shit out of it for weeks in advance.
So it took a lot of time, but it really paid off (and good thing, because it ended up being to a room of 400 people rather than just a couple dozen as I expected!)
But now that I know these things take even MORE time, I'm even less inclined to do them - fun, or not.
10 years hence, when my boy is an 18-year-old, THEN I have time for silly stuff like speaking engagements. But for now, he just fell asleep, which means I need to get to sleep too since I know we're getting up early as usual :-)