I've been attending Octocons for many years without doing anything of note apart from devising a quiz which has been occasionally completed.

First story published in November/December Interzone 2002 (#184)

(Pádraig Méalóid adds: Julian is too modest. He is the winner of the 2002 James White Award, which was founded to honour the memory of one of Ireland's most loved science fiction writers. Julian also occasionally contributes a quiz to Irish cons he attends, called The West Programming Quiz. P-CON attendees are going to be lucky enough to have one of these for their pleasure. It's a tough quiz, but he encourages constructive cheating.)