So, I too, was at Fantastic Fest and got to meet Jemaine. It was super awesome and he was extremely nice. I talked to him for about 20 minutes at the Highball after party until the photographers were on top of us then I duct away quickly to gossip with my friends about the most nerve-racking thing I had done in ages.
I have some pictures on my computer at home of us, so I will try to figure out how to post them later, but everyone should know that he is very nice, and funny, his assistant is the petite blond girl that is leading him around on the red carpet and she was nice... all in all a cool experience.
I also know that he went out with Woody Harrelson, Owen Wilson, and possibly Richard Linklater (director of Dazed and Confused, School of Rock) after he went to the Zombieland premier after the book signing on Friday.