Talk:Duncan Jones/@comment-27004494-20150920202802/@comment-5270762-20150921092339

If you mean on his own channel, then that would have been the first part of his Deus Ex: Human Revolution - The Missing Link series.

However if you mean just in the Yogscast generally, I believe the very first video Duncan was featured in as a guest would have been the WoW Cataclysm video where Simon, Lewis, TotalBiscuit and Duncan all completed the revamped Deadmines.