tweet-body— twitter-user (@username) date
Rehosting just in case: http://i.imgur.com/zRzWQ0w.jpg
You can see Anno's King doodle and Sadamoto's Asuka (did he always sign autographs in katakana?), both dated May 15th, 2010. Can't tell who the other signatures are.
There's your fill of "kinda neat" for the day.