{nl}Thanks to blueberrypaste and a member on fanforum we have a bunch of photos of Matt at the expo that you can see HERE! The member on fanforum also posted a little information about Matt there.
A couple of tidbits I just remembered from the panel. During the scene when he talks to harry about his parents, he didnt each lunch that day because he wanted to get the lines down. Scince the two were whispering and stuff, the mics were turned WAY up. So, when his stomach started rumbling, they picked it up. They had to keep doing it over and over and over again, and in the end they just dubbed over it.
My friend asked him what he thought Nevilles patronus would be. We never found out, but he said a sloth, becuase he thought the sloth in ice age was cool and he likes sloths. He also threw in Nevilles Gran XD.