There were two that I remember clearly, just before I stopped attending meetings. I'd stepped down as an elder a few years earlier, and was giving just Bible readings or #4 talks on the TMS.
My last two talks. In one, I explained very clearly just what the recent (1994-5) changes in WTS teachings were. Ie: the new 1914 generation, the sheep and the goats, the King of the North, etc. I explained them perfectly accurately and clearly and simply. I could see the mouths drop open as I spoke. The elders said nothing to me afterward. They couldn't. I was dead on in my explanation, though not one in 10 of the friends had any idea what the Society had changed up until that tal.
My last talk was an explanation of Proverbs 8, where wisdom is personified, and some verses of which the WTS applies prophetically to Jesus. I explained that these verses, in the Hebrew, actually were talking about a woman, and that this particular idea actually started much earlier than chapter 8, and instead of pulling a few of those verses out of context, you should really read the whole thing as it was written.
The next week the school overseer made a point of emphasizing that the WTS continued to apply those verses in Proverbs 8 to Jesus pre-human existence.
Those were my last talks in a Kingdom Hall.
S4