1. This may sound a bit weird but in 2005 I shared an elevator at the Hilton with a very pregnant woman ( I have forgotten her name). She worked for Blizzard and was one of the key people in charge of putting Blizzcon together. We started talking about Blizzard and the Con, and continued our conversation for 20 minutes or so. She picked my brain about things I liked and things that could change, I felt genuinely engaged and that my she was actually listening to me (random joe schmoe).
There were even changes I suggested made the following year (not saying it was me, but it nice to think I may have helped)
2. Winning a raffle prize in '05
3. Meeting Jay Mohr at the Hilton restaurant in '09
We had tables next to each other, he's a real cool guy.
4. Blizzcon 2011 ( the whole thing)
Instead of the usual 2-4 people at the con, a large group of us went together and hijinks ensued. Some people even participated in the costume contest, that was the most fun I've had to date.